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DO YOU DREAM OF HOVERBOARDS?

Onewheel started with a vision of the future--one where fast, fun, electric transportation makes getting around our cities a joy. Then we spent a ton of time putting together the best technologies we could buy and inventing the ones we couldn't.

What the press is saying about Onewheel:

"... the sort of gem that brings me to CES each year" -- CBS News

"Of all the new inventions I came across at this year’s CES in Las Vegas, Onewheel was the most innovative." -- Yahoo News

"The coolest thing I saw at CES was the Onewheel — a self-balancing, one-wheeled, motorized skateboard." -- TechCrunch

"Onewheel self-balancing electric skateboard is the closest thing to a hoverboard you can ride." -- stuff.tv

"we like that there’s only one moving part--the wheel--so there aren’t any gears or chains to mess with." -- Popular Science

"I don't know about you, but I know that when I pop out on my electric skateboard to do a spot of shopping, I always find myself thinking 'hello – this would even more exciting with three fewer wheels.' Apparently the people at California's Future Motion agree" -- Gizmag

"the Onewheel seems incredibly lithe; all of its components are stored within the billet-aluminum-and-maple plank, giving it a sleek aesthetic." -- Engadget

"CES reveals the near future's most incredible toys From mini drones to jumping cars and electric skateboards, a new generation of toys will be on wish lists next Christmas." -- The Guardian

ONEWHEEL IS A NEW ELECTRIC BOARDSPORT

Onewheel makes advanced technology invisible. With self-balancing technology, just lean forward to speed up, lean back to slow down. 

REVOLUTIONIZING THE EXPERIENCE OF RIDING

Onewheel has the most advanced motion sensing, hub motor and battery technology available--you just won't see it. What you'll experience is a board that feels magical whether for fun, waiting for the surf to come up, or getting around town. 

AN INCREDIBLE FEELING - FUN!

Riding Onewheel is like surfing or snowboarding -- no ocean or mountain required. It gives you that sublime feeling of snowboarding on a fresh powder day. Or that rush when you surf the perfect wave. Except you can do it anyday, anywhere. Get some flat ground and start riding. 

Onewheeling with pro kitesurfer Gretta Kruesi (@grettakruesi)

RIDE RIGHT AWAY

Most people can learn to ride Onewheel in a couple minutes even if they're not used to boardsports. That's because controlling a Onewheel is so intuitive. Powerful sensors and sophisticated algorithms are constantly helping you balance and control your ride with just the forward or backward lean of your body. People with experience with other boardsports are often ready to ride aggressively within their first few minutes on Onewheel. 

SPECIFICATIONS

We took the best available technologies and combined them to create a truly unique electric vehicle ride experience.    

Battery: 48V Lithium Nano-phosphate. The best batteries on the market with the maximum power density, fast charging and best overall lifetime  

Control electronics: Custom 6 DOF MEMS IMU and BLDC driver. Self balancing using PID control system. 

Motor: Hub motor, direct drive. After 3 years of refinement, the design became simpler and simpler. There's literally only one moving part--the wheel. No gears, belts or chains to maintain. The direct drive motor provides power and stability.

Speed: up to 12 MPH

Range: 4-6 miles (varies with terrain and riding style)

Recharging time: 20 minutes (ultra charger) 2 hrs (standard charger)

FEEDBACK FROM OUR BETA RIDERS

"Every street becomes like a fresh powder run" -- Gentry U. 

"First it's like, ok I lean forward to go. Then it's like oh, ah, I can lean to steer. Then it's like wwwhhheeee!!!" -- Joe W.

"Riding Onewheel was like having a psychic under your feet - it anticipated your next move almost before you knew you wanted to make it." -- Annie S.  

A DIGITAL VEHICLE

The ride experience of Onewheel is controlled by an algorithm we’ve been perfecting for years. Gyro and accelerometer sensors feed a powerful processor that determines the exact speed to drive the motor based on how you lean your body. State of the art power electronics give you smooth and responsive acceleration and regenerative braking.

FULLY CHARGED IN 20 MINUTES

Minute-for-minute fast charging with the High-Speed Charger lets you charge in a café or anywhere with a standard outlet.

Standard Charger: fully charge in 1 hour.

High-Speed Charger: fully charge in 20 minutes. 

REFINING THE RIDE

We began with a vision of bringing the amazing feeling of snowboarding on powder to the streets of the Bay Area in the Summer. This was the beginning of an odyssey that led us to being able to open up this technology to the world on Kickstarter. 

 

We’re riding our 5th generation Onewheel prototypes and we have a couple more iterations planned before our production run. Each iteration improves performance and manufacturability. 

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Onewheel Test Pilot Dan Goodwin (left) and Onewheel Inventor Kyle Doerksen (right)

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How ants build nest-ventilating turrets

By Victoria GillScience reporter, BBC Nature

Up to seven million grass-cutting ants can live and farm fungus in one giant nest

Continue reading the ma

Scientists have now discovered how the ants build nests that stay at the right temperature for this precious fungus to grow.

The ants build porous turrets, specifically to ventilate the nests.

A study, reported in the Journal of Insect Behaviour, has revealed how they manage this feat.

                                             The insects mould clay in their specialised jaws

Marcela Cosarinsky from the Argentinian Museum of Natural Sciences, Bernardino Rivadavia, in Buenos Aires led the study.

It was already known that the turrets, which jut out above the ants' expansive nests allowed air into the underground labyrinths. But this study is the first to show that the ants carefully construct the turrets with highly porous walls that are perfect for this exact job.

To show this was the case, the team carefully designed a construction task for the ants.

Dr Cosarinsky and her colleague Prof Flavio Roces of the University of Wuerzburg, Germany, brought a colony of grass-cutting ants into their laboratory and provided them with materials to built their giant nests.

They gave the ants three building materials: clay, coarse sand and fine sand, and tested the insects' building techniques by regularly changing the amount of each material that was available to them.

They even simulated rain damage to the nest by pouring water on to the structure.

"When [the ants] finished a turret, we analysed the arrangement of the building materials [under] the microscope," Dr Cosarinsky told BBC Nature. This revealed that, whatever materials they used, the ants always made turret walls that were highly porous and allowed air to flow through.

All of the ventilation turrets have highly porous walls that allow air to flow

"The ants construct the turrets by stacking sand grains and little balls of clay that they mould with their [jaws]," Dr Cosarinsky explained.

If the walls were watered, these pores would collapse, compacting the walls. "Immediately workers removed the materials", she said, and reworked the turret wall.

The findings confirm that the ventilation turrets are "built structures". "They don't simply result from a passive deposition of excavated soil, as is the case in many other ant species," the scientist explained.

Ant architecture

Prof Nigel Franks from Bristol University's Ant Lab described the study as "beautiful research".

"It shows that the ants change the way they build ventilation turrets depending on the materials that are available to them."

A medical CT scanner allowed scientists to capture 3-D snapshots of the nest being built over time

Prof Franks recently published his own findings from a study of ant nest architecture.

He and his team used medical CT scans to produce remarkable images of an ants' nest being constructed over time.

This generated accurate 3-D images of the nest, a feat that has previously been achieved only by pouring plaster or molten metal into the structure. Although this technique has created beautiful, accurate casts of the ants' nests, "it kills the poor ants and destroys the nest", said Prof Franks.

By taking CT snapshots over time, Prof Franks and the team revealed that yellow meadow ants, Lasius flavus, were able to sense the depth at which they were digging, and use this as a trigger to switch from vertical tunnelling to horizontal.

The insects are able to sense minute differences in the density of the soil at different depths. This highly tuned sense allows them to build organised horizontal pathways that connect the nest chambers.

"Ants often operate at a minute scale," said Prof Franks. "They seem well able to detect tiny differences in the substrate or even in minuscule air currents and then they can act on this information to improve the architecture of their buildings."

The scientist said that humans had a great deal to learn from ants.

"They have been around for perhaps 100 million years," he said. "Evolution by natural selection has equipped them with procedures that enable them to do certain things wonderfully well."

The scale of grass-cutting ant-built structures are certainly impressive.

The mounds they build are commonly 6-8m in diameter, almost 1m high and weigh approximately 40 tonnes.

History of China

Approximate territories occupied by different dynasties as well as modern political states throughout the history of China

History of China
ANCIENT
3 Sovereigns and 5 Emperors
Xia Dynasty 2100–1600 BC
Shang Dynasty 1600–1046 BC
Zhou Dynasty 1045–256 BC
Western Zhou
Eastern Zhou
Spring and Autumn period
Warring States period
IMPERIAL
Qin Dynasty 221 BC–206 BC
Han Dynasty 206 BC–220 AD
Western Han
Xin Dynasty
Eastern Han
Three Kingdoms 220–280
Wei, Shu and Wu
Jin Dynasty 265–420
Western Jin	16 Kingdoms 304–439
Eastern Jin
Southern and Northern Dynasties 420–589
Sui Dynasty 581–618
Tang Dynasty 618–907
(Second Zhou 690–705)
5 Dynasties and 10 Kingdoms 907–960	Liao Dynasty 907–1125
Song Dynasty 960–1279
Northern Song		W. Xia
Southern Song	Jin
Yuan Dynasty 1271–1368
Ming Dynasty 1368–1644
Qing Dynasty 1644–1911
MODERN
Republic of China 1912–1949
People's Republic of China 1949–present	Republic of China on Taiwan 1949–present
Related articles  Chinese historiography Timeline of Chinese history Dynasties in Chinese history Linguistic history Art history Economic history Education history Science and technology history Legal history Media history Military history Naval history
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Chinese civilization originated in various regional centers along both the Yellow River and the Yangtze River valleys in the Neolithic era, but the Yellow River is said to be the cradle of Chinese civilization. With thousands of years of continuous history, China is one of the world's oldest civilizations.^[1]The written history of China can be found as early as the Shang Dynasty (c. 1700–1046 BC),^[2] although ancient historical texts such as the Records of the Grand Historian (ca. 100 BC) and Bamboo Annals assert the existence of a Xia Dynasty before the Shang.^[2][3] Much of Chinese culture,literature and philosophy further developed during the Zhou Dynasty (1045–256 BC).

The Zhou Dynasty began to bow to external and internal pressures in the 8th century BC, and the kingdom eventually broke apart into smaller states, beginning in the Spring and Autumn Period and reaching full expression in the Warring States period. This is one of multiple periods of failed statehoodin Chinese history (the most recent of which was the Chinese Civil War).

In between eras of multiple kingdoms and warlordism, Chinese dynasties have ruled parts or all of China; in some eras, including the present, control has stretched as far as Xinjiang and/or Tibet. This practice began with the Qin Dynasty: in 221 BC, Qin Shi Huang united the various warring kingdoms and created the first Chinese empire. Successive dynasties in Chinese history developed bureaucratic systems that enabled the Emperor of China to directly control vast territories. China's last dynasty was Qing, which was replaced by the Republic of China in 1912, and in the mainland by thePeople's Republic of China in 1949.

The conventional view of Chinese history is that of alternating periods of political unity and disunity, with China occasionally being dominated by steppe peoples, most of whom were in turn assimilated into the Han Chinese population. Cultural and political influences from other parts of Asia and theWestern world, carried by successive waves of immigration, expansion, foreign contact, and cultural assimilation are part of the modern culture of China.

Prehistory

Paleolithic

See also: List of Paleolithic sites in China

What is now China was inhabited by Homo erectus more than a million years ago.^[4] Recent study shows that the stone tools found at Xiaochangliang site are magnetostratigraphically dated to 1.36 million years ago.^[5] The archaeological site of Xihoudu in Shanxi Province is the earliest recorded use of fire by Homo erectus, which is dated 1.27 million years ago.^[4] The excavations at Yuanmou and later Lantianshow early habitation. Perhaps the most famous specimen of Homo erectus found in China is the so-called Peking Man discovered in 1923–27.

Neolithic

See also: List of Neolithic cultures of China

The Neolithic age in China can be traced back to about 10,000 BC.^[6]

Early evidence for proto-Chinese millet agriculture is radiocarbon-dated to about 7000 BC.^[7] Farming gave rise to the Jiahu culture (7000 to 5800 BC). At Damaidi in Ningxia, 3,172 cliff carvings dating to 6000–5000 BC have been discovered, "featuring 8,453 individual characters such as the sun, moon, stars, gods and scenes of hunting or grazing." These pictographs are reputed to be similar to the earliest characters confirmed to be written Chinese.^[8][9] Excavation of a Peiligang culture site in Xinzheng county, Henan, found a community that flourished in 5,500–4,900 BC, with evidence of agriculture, constructed buildings, pottery, and burial of the dead.^[10] With agriculture came increased population, the ability to store and redistribute crops, and the potential to support specialist craftsmen and administrators.^[11] In late Neolithic times, the Yellow River valley began to establish itself as a center of Yangshao culture (5000 BC to 3000 BC), and the first villages were founded; the most archaeologically significant of these was found at Banpo, Xi'an.^[12] Later, Yangshao culture was superseded by the Longshan culture, which was also centered on the Yellow River from about 3000 BC to 2000 BC.

The early history of China is obscured by the lack of written documents from this period, coupled with the existence of later accounts that attempted to describe events that had occurred several centuries previously. In a sense, the problem stems from centuries of introspection on the part of the Chinese people, which has blurred the distinction between fact and fiction in regards to this early history.

Ancient China

Xia Dynasty (c. 2100 – c. 1600 BC)

Main article: Xia Dynasty

Major site(s): possibly Erlitou The Xia Dynasty of China (from c. 2100 to c. 1600 BC) is the first dynasty to be described in ancient historical records such as Sima Qian's Records of the Grand Historian andBamboo Annals.^[2][3]

Although there is disagreement as to whether the dynasty actually existed, there is some archaeological evidence pointing to its possible existence. Sima Qian, writing in the late 2nd century BC, dated the founding of the Xia Dynasty to around 2200 BC, but this date has not been corroborated. Most archaeologists now connect the Xia to excavations at Erlitou in central Henan province,^[13] where a bronze smelter from around 2000 BC was unearthed. Early markings from this period found on pottery and shells are thought to be ancestral to modern Chinese characters.^[14] With few clear records matching theShang oracle bones or the Zhou bronze vessel writings, the Xia era remains poorly understood.

According to mythology, the dynasty ended around 1600 BC as a consequence of the Battle of Mingtiao.

Shang Dynasty (c. 1700–1046 BC)

Remnants of advanced, stratifiedsocieties dating back to the Shang found primarily in the Yellow River Valley

Main article: Shang Dynasty

Capital: Yin, near Anyang (Shang Dynasty period)

Archaeological findings providing evidence for the existence of the Shang Dynasty, c. 1600–1046 BC, are divided into two sets. The first set – from the earlier Shang period – comes from sources at Erligang, Zhengzhou, and Shangcheng. The second set – from the later Shang or Yin (殷) period – is at Anyang, in modern-dayHenan, which has been confirmed as the last of the Shang's nine capitals (c. 1300–1046 BC).^{[citation needed]} The findings at Anyang include the earliest written record of Chinese past so far discovered: inscriptions of divination records in ancient Chinese writing on the bones or shells of animals – the so-called "oracle bones", dating from around 1200 BC.^[15]

The Shang Dynasty featured 31 kings, from Tang of Shang to King Zhou of Shang. In this period, the Chinese worshipped many different gods – weather gods and sky gods – and also a supreme god, named Shangdi, who ruled over the other gods. Those who lived during the Shang Dynasty also believed that their ancestors – their parents and grandparents – became like gods when they died, and that their ancestors wanted to be worshipped, too, like gods. Each family worshipped its own ancestors.

The Records of the Grand Historian states that the Shang Dynasty moved its capital six times. The final (and most important) move to Yin in 1350 BC led to the dynasty's golden age. The term Yin Dynasty has been synonymous with the Shang dynasty in history, although it has lately been used to specifically refer to the latter half of the Shang Dynasty.

Chinese historians living in later periods were accustomed to the notion of one dynasty succeeding another, but the actual political situation in early China is known to have been much more complicated. Hence, as some scholars of China suggest, the Xia and the Shang can possibly refer to political entities that existed concurrently, just as the early Zhou is known to have existed at the same time as the Shang.

Although written records found at Anyang confirm the existence of the Shang dynasty,^{[citation needed]} Western scholars are often hesitant to associate settlements that are contemporaneous with the Anyang settlement with the Shang dynasty. For example, archaeological findings at Sanxingdui suggest a technologically advanced civilization culturally unlike Anyang. The evidence is inconclusive in proving how far the Shang realm extended from Anyang. The leading hypothesis is that Anyang, ruled by the same Shang in the official history, coexisted and traded with numerous other culturally diverse settlements in the area that is now referred to as China proper.

Zhou Dynasty (1046–256 BC)

Bronze ritual vessel (You), Western Zhou Dynasty

Main articles: Zhou Dynasty and Iron Age China

Capitals: Xi'an and Luoyang

The Zhou Dynasty was the longest-lasting dynasty in Chinese history, from 1066 BC to approximately 256 BC. By the end of the 2nd millennium BC, the Zhou Dynasty began to emerge in the Yellow River valley, overrunning the territory of the Shang. The Zhou appeared to have begun their rule under a semi-feudal system. The Zhou lived west of the Shang, and the Zhou leader had been appointed "Western Protector" by the Shang. The ruler of the Zhou, King Wu, with the assistance of his brother, the Duke of Zhou, as regent, managed to defeat the Shang at the Battle of Muye.

The king of Zhou at this time invoked the concept of the Mandate of Heaven to legitimize his rule, a concept that would be influential for almost every succeeding dynasty. Like Shangdi, Heaven (tian) ruled over all the other gods, and it decided who would rule China. It was believed that a ruler had lost the Mandate of Heaven when natural disasters occurred in great number, and when, more realistically, the sovereign had apparently lost his concern for the people. In response, the royal house would be overthrown, and a new house would rule, having been granted the Mandate of Heaven.

The Zhou initially moved their capital west to an area near modern Xi'an, on the Wei River, a tributary of the Yellow River, but they would preside over a series of expansions into the Yangtze River valley. This would be the first of many population migrations from north to south in Chinese history.

Spring and Autumn Period (722–476 BC)

Chinese pu vessel with interlaceddragon design, Spring and Autumn period

Main article: Spring and Autumn period

Capitals: of the State of Yan, Beijing; of the State of Qin, Xi'an

In the 8th century BC, power became decentralized during the Spring and Autumn period, named after the influential Spring and Autumn Annals. In this period, local military leaders used by the Zhou began to assert their power and vie for hegemony. The situation was aggravated by the invasion of other peoples from the northwest, such as the Qin, forcing the Zhou to move their capital east to Luoyang. This marks the second major phase of the Zhou dynasty: the Eastern Zhou. The Spring and Autumn Period is marked by a falling apart of the central Zhou power. In each of the hundreds of states that eventually arose, local strongmen held most of the political power and continued their subservience to the Zhou kings in name only. Some local leaders even started using royal titles for themselves. China now consisted of hundreds of states, some of them only as large as a village with a fort.

The Hundred Schools of Thought of Chinese philosophy blossomed during this period, and such influential intellectual movements as Confucianism, Taoism,Legalism and Mohism were founded, partly in response to the changing political world.

Warring States Period (476–221 BC)

Main article: Warring States period

Several capitals, due to there being multiple states

After further political consolidation, seven prominent states remained by the end of 5th century BC, and the years in which these few states battled each other are known as the Warring States period. Though there remained a nominal Zhou king until 256 BC, he was largely a figurehead and held little real power.

As neighboring territories of these warring states, including areas of modern Sichuan and Liaoning, were annexed, they were governed under the new local administrative system of commandery and prefecture (郡縣/郡县). This system had been in use since the Spring and Autumn Period, and parts can still be seen in the modern system of Sheng & Xian(province and county, 省縣/省县).

The final expansion in this period began during the reign of Ying Zheng, the king of Qin. His unification of the other six powers, and further annexations in the modern regions of Zhejiang, Fujian, Guangdongand Guangxi in 214 BC, enabled him to proclaim himself the First Emperor (Qin Shi Huang).

Imperial China

Qin Dynasty (221–206 BC)

Qin Shi Huang

Main article: Qin Dynasty

Capital: Xianyang Historians often refer to the period from Qin Dynasty to the end of Qing Dynasty as Imperial China. Though the unified reign of the First Qin Emperorlasted only 12 years, he managed to subdue great parts of what constitutes the core of the Han Chinese homeland and to unite them under a tightly centralized Legalistgovernment seated at Xianyang (close to modern Xi'an). The doctrine of Legalism that guided the Qin emphasized strict adherence to a legal code and the absolute power of the emperor. This philosophy, while effective for expanding the empire in a military fashion, proved unworkable for governing it in peacetime. The Qin Emperor^{[when defined as?]} presided over the brutal silencing of political opposition, including the event known as the burning of books and burying of scholars. This would be the impetus behind the later Han synthesis incorporating the more moderate schools of political governance.

The Terracotta Army of Qin Shi Huang.

The Qin Dynasty is well known for beginning the Great Wall of China, which was later augmented and enhanced during the Ming Dynasty. The other major contributions of the Qin include the concept of a centralized government, the unification of the legal code, development of the written language, measurement, and currency of China after the tribulations of the Spring and Autumn and Warring States Periods. Even something as basic as the length of axles for carts had to be made uniform to ensure a viable trading system throughout the empire.

Han Dynasty (202 BC–AD 220)

Main article: Han Dynasty

Further information: History of the Han Dynasty

Capitals: Chang'an, Luoyang, Liyang, Xuchang

Western Han

A Han Dynasty oil lamp with a sliding shutter, in the shape of a kneeling female servant, 2nd century BC

The Han Dynasty was founded by Liu Bang, who emerged victorious in the civil war that followed the collapse of the unified but short-lived Qin Dynasty. A golden agein Chinese history, the Han Dynasty's long period of stability and prosperity consolidated the foundation of China as a unified state under a central imperial bureaucracy, which was to last intermittently for most of the next two millennium. During the Han Dynasty, territory of China was extended to most of the China proper and to areas far west. Confucianism was officially elevated to orthodox status and was to shape the subsequent Chinese Civilization. Art, Culture and Science all advanced to unprecedented heights. With the profound and lasting impacts of this period of Chinese history, the dynasty name "Han" had been taken as the name of the Chinese people, now the dominant ethnic group in modern China, and had been commonly used to refer to Chinese language and written characters.

After the initial Laissez-faire policies of Emperors Wen and Jing, the ambitious Emperor Wu brought the empire to its zenith. To consolidate his power,Confucianism, which emphasizes stability and order in a well-structured society, was given exclusive patronage to be the guiding philosophical thoughts and moral principles of the empire. Imperial Universities were established to support its study and further development, while other schools of thoughts were discouraged.

Major military campaigns were launched to weaken the nomadic Xiongnu Empire, limiting their influence north of the Great Wall. Along with the diplomatic efforts led by Zhang Qian, the sphere of influence of the Han Empire extended to the states in the Tarim Basin, opened up the Silk Road that connected China to west, stimulating prosperous bilateral trades and cultural exchange. To the south, various small kingdoms far beyond the Yangtze River Valley were formally incorporated into the empire.

Emperor Wu also dispatched a series of military campaigns against the Baiyue tribes. The Han annexed Minyue in 135 BC and 111 BC, Nanyue in 111 BC, andDian in 109 BC.^[16] Migration and military expeditions led to the cultural assimilation of the south.^[17] It also brought the Han into contact with kingdoms in Southeast Asia, introducing diplomacy and trade.^[18]

After Emperor Wu, the empire slipped into gradual stagnation and decline. Economically, the state treasury was strained by excessive campaigns and projects, while land acquisitions by elite families gradually drained the tax base. Various consort clans exerted increasing control over strings of incompetent emperors and eventually the dynasty was briefly interrupted by the usurpation of Wang Mang.

Xin Dynasty

In AD 9, the usurper Wang Mang claimed that the Mandate of Heaven called for the end of the Han dynasty and the rise of his own, and he founded the short-livedXin ("New") Dynasty. Wang Mang started an extensive program of land and other economic reforms, including the outlawing of slavery and land nationalization and redistribution. These programs, however, were never supported by the landholding families, because they favored the peasants. The instability of power brought about chaos, uprisings, and loss of territories. This was compounded by mass flooding of the Yellow River; silt buildup caused it to split into two channels and displaced large numbers of farmers. Wang Mang was eventually killed in Weiyang Palace by an enraged peasant mob in AD 23.

Eastern Han

Emperor Guangwu reinstated the Han Dynasty with the support of landholding and merchant families at Luoyang, east of the former capital Xi'an. Thus, this new era is termed the Eastern Han Dynasty. With the capable administrations of Emperors Ming and Zhang, former glories of the dynasty was reclaimed, with brilliant military and cultural achievements. The Xiongnu Empire was decisively defeated. The diplomat and general Ban Chao further expanded the conquests across thePamirs to the shores of the Caspian Sea.,^[19] thus reopening the Silk Road, and bringing trade, foreign cultures, along with the arrival of Buddhism. With extensive connections with the west, the first of severalRoman embassies to China were recorded in Chinese sources, coming from the sea route in AD 166, and a second one in AD 284.

The Eastern Han Dynasty was one of the most prolific era of science and technology in ancient China, notably the historic invention of papermaking by Cai Lun, and the numerous contributions by thepolymath Zhang Heng.

By the 2nd century, the empire declined amidst land acquisitions, invasions, and feuding between consort clans and eunuchs. The Yellow Turban Rebellion broke out in AD 184, ushering in an era of warlords. In the ensuing turmoil, three states tried to gain predominance in the period of the Three Kingdoms. This time period has been greatly romanticized in works such as Romance of the Three Kingdoms.

Wei and Jin Period (AD 265–420)

Main articles: Cao Wei and Jin Dynasty (265-420)

Capitals: of Cao Wei and Western Jin, Luoyang; of Shu Han, Chengdu; of Eastern Wu and Eastern Jin, Jiankang; of Western Jin, Chang'an

After Cao Cao reunified the north in 208, his son proclaimed the Wei dynasty in 220. Soon, Wei's rivals Shu and Wu proclaimed their independence, leading China into the Three Kingdoms Period. This period was characterized by a gradual decentralization of the state that had existed during the Qin and Han dynasties, and an increase in the power of great families. Although the Three Kingdoms were reunified by the Jin Dynasty in 280, this structure was essentially the same until the Wu Hu uprising.

Wu Hu Period (AD 304–439)

Main articles: Sixteen Kingdoms and Wu Hu uprising

Several capitals, due to there being several states and warring

Taking advantage of civil war in the Jin Dynasty, the contemporary non-Han Chinese (Wu Hu) ethnic groups controlled much of the country in the early 4th century and provoked large-scale Han Chinese migrations to south of the Yangtze River. In 303 the Di people rebelled and later captured Chengdu, establishing the state of Cheng Han. Under Liu Yuan, the Xiongnu rebelled near today's Linfen County and established the state of Han Zhao. Liu Yuan's successor Liu Cong captured and executed the last two Western Jin emperors. Sixteen kingdoms were a plethora of short-lived non-Chinese dynasties that came to rule the whole or parts of northern China in the 4th and 5th centuries. Many ethnic groups were involved, including ancestors of the Turks, Mongols, and Tibetans. Most of these nomadic peoples had, to some extent, been "sinicized" long before their ascent to power. In fact, some of them, notably the Qiang and the Xiongnu, had already been allowed to live in the frontier regions within the Great Wall since late Han times.

A limestone statue of theBodhisattva, from the Northern Qi Dynasty, AD 570, made in what is now modern Henan province.

Southern and Northern Dynasties (AD 420–589)

Main article: Southern and Northern Dynasties

Capitals: of the Northern Dynasties: Ye, Chang'an, of the Southern Dynasties: Jiankang

Signaled by the collapse of East Jin Dynasty in 420, China entered the era of the Southern and Northern Dynasties. The Han people managed to survive the military attacks from the nomadic tribes of the north, such as the Xianbei, and their civilization continued to thrive.

In southern China, fierce debates about whether Buddhism should be allowed to exist were held frequently by the royal court and nobles. Finally, near the end of the Southern and Northern Dynasties era, both Buddhist and Taoist followers compromised and became more tolerant of each other.

In 589, Sui annexed the last Southern Dynasty, Chen, through military force, and put an end to the era of Southern and Northern Dynasties.

Medieval China

Sui Dynasty (AD 589–618)

Main article: Sui Dynasty

Official capital: Daxing; secondary capital: Dongdu

The Sui Dynasty, which managed to reunite the country in 589 after nearly four centuries of political fragmentation, played a role more important than its length of existence would suggest. The Sui brought China together again and set up many institutions that were to be adopted by their successors, the Tang. These included the government system of Three Departments and Six Ministries, standard coinage, improved defense and expansion of the Great Wall, and official support for Buddhism. Like the Qin, however, the Sui overused their resources and collapsed.

Tang Dynasty (AD 618–907)

A Chinese Tang Dynasty tricolored glazeporcelain horse (ca. AD 700)

Main article: Tang Dynasty

Capitals: Chang'an and Luoyang

Tang Dynasty was founded by Emperor Gaozu on 18 June 618. It was a golden age of Chinese civilization with significant developments in art, literature, particularly poetry, and technology. Buddhism became the predominant religion for common people. Chang'an (modern Xi'an), the national capital, was the largest city in the world of its time.

Started by the second emperor, Taizong, military campaigns were launched to dissolve threats from nomadic tribes, extend the border, and submit neighboring states into atributary system. Military victories in the Tarim Basin kept the Silk Road open, connecting Chang'an to Central Asia and areas far to the west. In the south, lucrative maritime trade routes began from port cities such as Guangzhou. There was extensive trade with distant foreign countries, and many foreign merchants settled in China, boosting a vibrant cosmopolitan culture. The Tang culture and social systems were admired and adapted by neighboring countries like Japan. Internally, the Grand Canal linked the political heartland in Chang'an to the economic and agricultural centers in the eastern and southern parts of the empire.

Underlying the prosperity of the early Tang Dynasty was a strong centralized bureaucracy with efficient policies. The government was organized as "Three Departments and Six Ministries" to separately draft, review, and implement policies. These departments were run by royal family members as well as scholar officials who were selected from imperial examinations. These practices, which matured in the Tang Dynasty, were to be inherited by the later dynasties with some modifications.

The Tang land policy – the "Equal-field system" – claimed all lands as imperially owned, and were granted evenly to people according to the size of the households. The associated military policy – the "Fubing system" – conscripted all men in the nation for a fixed duty period each year in exchange for their land rights. These policies stimulated rapid growth of productivity, while boosting the army without much burden on the state treasury. However, lands gradually fell into the hands of private land owners, and standing armies were to replace conscription towards the middle period of the dynasty.

The dynasty continued to flourish under Empress Wu Zetian, the only empress regnant in Chinese history, and reached its zenith during the reign of Emperor Xuanzong, who oversaw an empire that stretched from the Pacific to the Aral Sea with at least 50 million people.

At the zenith of prosperity of the empire, the An Lushan Rebellion from 755 to 763 was a watershed event that devastated the population and drastically weakened the central imperial government. Regional military governors, known as Jiedushi, gained increasingly autonomous status while formerly submissive states raided the empire. Nevertheless, after the An Lushan Rebellion, the Tang civil society recovered and thrived amidst the weakened imperial bureaucracy.

From about 860, the Tang Dynasty declined due to a series of rebellions within China itself and in the former subject Kingdom of Nanzhao to the south. One warlord, Huang Chao, captured Guangzhou in 879, killing most of the 200,000 inhabitants, including most of the large colony of foreign merchant families there.^[20][21] In late 880, Luoyang surrendered to Huang Chao, and on 5 January 881 he conqueredChang'an. The emperor Xizong fled to Chengdu, and Huang established a new temporary regime which was eventually destroyed by Tang forces. Another time of political chaos followed.

Five Dynasties and Ten Kingdoms (AD 907–960)

Main article: Five Dynasties and Ten Kingdoms period

Various capitals

The period of political disunity between the Tang and the Song, known as the Five Dynasties and Ten Kingdoms period, lasted little more than half a century, from 907 to 960. During this brief era, when China was in all respects a multi-state system, five regimes rapidly succeeded one another in control of the old Imperial heartland in northern China. During this same time, sections of southern and western China were occupied by ten, more stable, regimes so the period is also referred to as the Ten Kingdoms.

Song, Liao, Jin, and Western Xia Dynasties (AD 960–1234)

Homeward Oxherds in Wind and Rain, by Li Di, 12th century

Main articles: Song Dynasty, Liao Dynasty, Western Xia, and Jin Dynasty, 1115-1234

Further information: History of the Song Dynasty

Capitals: of the Song Dynasty, Kaifeng and Lin'an; of the Liao Dynasty, Shangjing, Nanjing, and Tokmok; of the Jin Dynasty, Shangjing, Zhongdu, and Kaifeng; of the Western Xia Dynasty, Yinchuan

In 960, the Song Dynasty gained power over most of China and established its capital in Kaifeng (later known as Bianjing), starting a period of economic prosperity, while the Khitan Liao Dynasty ruled over Manchuria, present-day Mongolia, and parts of Northern China. In 1115, the Jurchen Jin Dynasty emerged to prominence, annihilating the Liao Dynasty in 10 years. Meanwhile, in what are now the northwestern Chinese provinces of Gansu, Shaanxi, and Ningxia, there emerged aWestern Xia Dynasty from 1032 to 1227, established by Tangut tribes.

The Jin Dynasty took power over northern China and Kaifeng from the Song Dynasty, which moved its capital to Hangzhou (杭州). The Southern Song Dynasty also suffered the humiliation of having to acknowledge the Jin Dynasty as formal overlords. In the ensuing years, China was divided between the Song Dynasty, the Jin Dynasty and the Tangut Western Xia. Southern Song experienced a period of great technological development which can be explained in part by the military pressure that it felt from the north. This included the use of gunpowder weapons, which played a large role in the Song Dynasty naval victories against the Jin in theBattle of Tangdao and Battle of Caishi on the Yangtze River in 1161. Furthermore, China's first permanent standing navy was assembled and provided an admiral's office at Dinghai in 1132, under the reign of Emperor Renzong of Song.

The Song Dynasty is considered by many to be classical China's high point in science and technology, with innovative scholar-officials such as Su Song (1020–1101) and Shen Kuo (1031–1095). There was court intrigue between the political rivals of the Reformers and Conservatives, led by the chancellors Wang Anshi andSima Guang, respectively. By the mid-to-late 13th century, the Chinese had adopted the dogma of Neo-Confucian philosophy formulated by Zhu Xi. Enormous literary works were compiled during the Song Dynasty, such as the historical work of the Zizhi Tongjian ("Comprehensive Mirror to Aid in Government"). Culture and the arts flourished, with grandiose artworks such as Along the River During the Qingming Festival and Eighteen Songs of a Nomad Flute, along with great Buddhist painters like the prolific Lin Tinggui.

Yuan Dynasty (AD 1271–1368)

Main article: Yuan Dynasty

Yang Guifei Mounting a Horse, by Qian Xuan (1235–1305 AD).

Capitals: Xanadu and Dadu

The Jurchen-founded Jin Dynasty was defeated by the Mongols, who then proceeded to defeat the Southern Song in a long and bloody war, the first war in whichfirearms played an important role. During the era after the war, later called the Pax Mongolica, adventurous Westerners such as Marco Polo travelled all the way to China and brought the first reports of its wonders to Europe. In the Yuan Dynasty, the Mongols were divided between those who wanted to remain based in the steppes and those who wished to adopt the customs of the Chinese.

Kublai Khan, grandson of Genghis Khan, wanting to adopt the customs of China, established the Yuan Dynasty. This was the first dynasty to rule the whole of China from Beijing as the capital. Beijing had been ceded to Liao in AD 938 with the Sixteen Prefectures of Yan Yun. Before that, it had been the capital of the Jin, who did not rule all of China.

Before the Mongol invasion, Chinese dynasties reportedly had approximately 120 million inhabitants; after the conquest was completed in 1279, the 1300 census reported roughly 60 million people.^[22] While it is tempting to attribute this major decline solely to Mongol ferocity, scholars today have mixed sentiments regarding this subject. Scholars such as Frederick W. Mote argue that the wide drop in numbers reflects an administrative failure to record rather than an actual decrease; others such as Timothy Brook argue that the Mongols created a system of enserfment among a huge portion of the Chinese populace, causing many to disappear from the census altogether; other historians like William McNeill and David Morgan argue that the Bubonic Plague was the main factor behind the demographic decline during this period.

In the 14th century, China suffered additional depredations from epidemics of plague. The Black Death is estimated to have killed 25 million people or 30% of the population of China.^[23]

Early modern

See also: Chinese dynasties of the early modern period

Ming Dynasty (AD 1368–1644)

Main article: Ming Dynasty

Further information: History of the Ming Dynasty

Capitals: Nanjing, Beijing, Fuzhou, and Zhaoqing

Court Ladies of the Former Shu, by Ming painter Tang Yin(1470–1523).

Hongwu Emperor, founder of the Ming Dynasty

Throughout the Yuan Dynasty, which lasted less than a century, there was relatively strong sentiment among the populace against the Mongol rule. The frequent natural disasters since the 1340s finally led to peasant revolts. The Yuan Dynasty was eventually overthrown by the Ming Dynasty in 1368.

Urbanization increased as the population grew and as the division of labor grew more complex. Large urban centers, such as Nanjing and Beijing, also contributed to the growth of private industry. In particular, small-scale industries grew up, often specializing in paper, silk, cotton, and porcelain goods. For the most part, however, relatively small urban centers with markets proliferated around the country. Town markets mainly traded food, with some necessary manufactures such as pins or oil.

Despite the xenophobia and intellectual introspection characteristic of the increasingly popular new school of neo-Confucianism, China under the early Ming Dynasty was not isolated. Foreign trade and other contacts with the outside world, particularly Japan, increased considerably. Chinese merchants explored all of the Indian Ocean, reaching East Africa with the voyages of Zheng He.

Zhu Yuanzhang or Hong-wu, the founder of the dynasty, laid the foundations for a state interested less in commerce and more in extracting revenues from the agricultural sector. Perhaps because of the Emperor's background as a peasant, the Ming economic system emphasized agriculture, unlike that of the Song and the Mongolian Dynasties, which relied on traders and merchants for revenue. Neo-feudal landholdings of the Song and Mongol periods were expropriated by the Ming rulers. Land estates were confiscated by the government, fragmented, and rented out. Private slavery was forbidden. Consequently, after the death of Emperor Yong-le, independent peasant landholders predominated in Chinese agriculture. These laws might have paved the way to removing the worst of the poverty during the previous regimes.

Ming China under the reign of the Yongle Emperor

The dynasty had a strong and complex central government that unified and controlled the empire. The emperor's role became more autocratic, although Zhu Yuanzhang necessarily continued to use what he called the "Grand Secretaries" (内阁) to assist with the immense paperwork of the bureaucracy, including memorials (petitions and recommendations to the throne), imperial edicts in reply, reports of various kinds, and tax records. It was this same bureaucracy that later prevented the Ming government from being able to adapt to changes in society, and eventually led to its decline.

The Yong-le Emperor strenuously tried to extend China's influence beyond its borders by demanding other rulers send ambassadors to China to present tribute. A large navy was built, including four-masted ships displacing 1,500 tons. A standing army of 1 million troops (some estimate as many as 1.9 million^[who?]) was created. The Chinese armies conquered Vietnam for around 20 years, while the Chinese fleet sailed the China seas and the Indian Ocean, cruising as far as the east coast of Africa. The Chinese gained influence in eastern Moghulistan. Several maritime Asian nations sent envoys with tribute for the Chinese emperor. Domestically, the Grand Canal was expanded and proved to be a stimulus to domestic trade. Over 100,000 tons of iron per year were produced. Many books were printed using movable type. The imperial palace in Beijing's Forbidden City reached its current splendor. It was also during these centuries that the potential of south China came to be fully exploited. New crops were widely cultivated and industries such as those producing porcelain and textiles flourished.

In 1449 Esen Tayisi led an Oirat Mongol invasion of northern China which culminated in the capture of the Zhengtong Emperor at Tumu. In 1542 the Mongol leaderAltan Khan began to harass China along the northern border. In 1550 he even reached the suburbs of Beijing. The empire also had to deal with Japanese piratesattacking the southeastern coastline;^[24] General Qi Jiguang was instrumental in defeating these pirates. The deadliest earthquake of all times, the Shaanxi earthquake of 1556 that killed approximately 830,000 people, occurred during the Jiajing Emperor's reign.

During the Ming dynasty the last construction on the Great Wall was undertaken to protect China from foreign invasions. While the Great Wall had been built in earlier times, most of what is seen today was either built or repaired by the Ming. The brick and granite work was enlarged, the watch towers were redesigned, and cannons were placed along its length.

Qing Dynasty (AD 1644–1911)

"The reception of the Diplomatique (Macartney) and his suite, at the Court of Pekin". Drawn and engraved by James Gillray, published in September 1792.

Territory of Qing China in 1892

Main article: Qing Dynasty

Capitals: Shenyang and Beijing

The Qing Dynasty (1644–1911) was the last imperial dynasty in China. Founded by the Manchus, it was the second non-Han Chinese dynasty. The Manchus were formerly known as Jurchen, residing in the northeastern part of the Ming territory outside the Great Wall. They emerged as the major threat to the late Ming Dynasty after Nurhaci united all Jurchen tribes and established an independent state. However, theMing Dynasty would be overthrown by Li Zicheng's peasants rebellion, with Beijing captured in 1644 and the last Ming Emperor Chongzhen committing suicide. The Manchu allied with the Ming Dynasty general Wu Sangui to seize Beijing, which was made the capital of the Qing dynasty, and then proceeded to subdue the remaining Ming's resistance in the south. The decades of Manchu conquest caused enormous loss of lives and the economic scale of China shrank drastically. Nevertheless, the Manchus adopted the Confucian norms of traditional Chinese government in their rule and were considered a Chinese dynasty.

The Manchus enforced a 'queue order,' forcing the Han Chinese to adopt the Manchu queue hairstyle and Manchu-style clothing. The traditional Han clothing, or Hanfu, was also replaced by Manchu-style clothingQipao (bannermen dress and Tangzhuang). The Kangxi Emperor ordered the creation of Kangxi Dictionary, the most complete dictionary of Chinese characters ever put together at the time. The Qing dynasty set up the "Eight Banners" system that provided the basic framework for the Qing military organization. The bannermen were prohibited from participating in trade and manual labour unless they petitioned to be removed from banner status. They were considered a form of nobility and were given preferential treatment in terms of annual pensions, land and allotments of cloth.

French political cartoon from the late 1890s shows helpless China being divided among Britain, Germany, Russia, France and Japan.

Over the next half-century, all areas previously under the Ming Dynasty were consolidated under the Qing. Xinjiang, Tibet, and Mongolia were also formally incorporated into Chinese territory. Between 1673 and 1681, the Emperor Kangxi suppressed an uprising of three generals in Southern China who had been denied hereditary rule to large fiefdoms granted by the previous emperor; he also put down a Ming restorationist invasion from Taiwan, called the Revolt of the Three Feudatories. In 1683, the Qing staged an amphibious assault on southern Taiwan, bringing down the rebel Grand Duchy of Tungning, which was founded by the Ming loyalist Koxinga in 1662 after the fall of the Southern Ming, and had served as a base for continued Ming resistance in Southern China.

By the end of Qianlong Emperor's long reign, the Qing Empire was at its zenith. China ruled more than one-third of the world's population, and had the largest economy in the world. By area of extent, it was one of the largest empires ever in history.

In the 19th century, the empire was internally stagnated and externally threatened by imperialism. The defeat by the British Empire in the First Opium War (1840) led to the Treaty of Nanking (1842), under which Hong Kong was ceded and opium import was legitimized. Subsequent military defeats and unequal treaties with other imperial powers would continue even after the fall of the Qing Dynasty.

Internally, the Taiping Rebellion (1851–1864), a quasi-Christian religious movement led by the "Heavenly King" Hong Xiuquan, raided roughly a third of Chinese territory for over a decade until they were finally crushed in the Third Battle of Nanking in 1864. Arguably one of the largest wars in the 19th century in terms of troop involvement, there was massive loss of life, with a death toll of about 20 million.^[25] A string of rebellions followed, which included the Punti–Hakka Clan Wars, Nien Rebellion, Muslim Rebellion, and Panthay Rebellion.^[26] Although all rebellions were eventually put down at enormous cost and with many casualties, the central imperial authority was seriously weakened. The Banner system the Manchus had relied upon so long proved a total failure, as the Banner forces were unable to suppress the rebels. The government called upon local officials in the provinces who raised “New Armies,” which did prove a success in crushing the rebellion. China never rebuilt a strong central army, but the local officials often became warlords, who used military power to effectively rule independently in their provinces.^[27]

The Empress Dowager Cixi

In response to calamities within the empire and threats from imperialism, the Self-Strengthening Movement was an institutional reform in the second half of the 1800s. The aim was to modernize the empire, with prime emphasis on strengthening the military. However, the reform was undermined by corrupt officials, cynicism, and quarrels within the imperial family. As a result, the "Beiyang Fleet" were soundly defeated in the First Sino-Japanese War (1894–1895). Guangxu Emperor and the reformists then launched a more comprehensive reform effort, the Hundred Days' Reform (1898), but it was shortly overturned by the conservatives under Empress Dowager Cixi in a military coup.

At the turn of the 20th century, a conservative anti-imperialist movement, the Boxer Rebellion, violently revolted against foreign suppression over vast areas in Northern China. The Empress Dowager, probably seeking to ensure her continual grip on power, sided with the Boxers as they advanced on Beijing. In response, a relief expedition of theEight-Nation Alliance invaded China to rescue the besieged foreign missions. Consisting of British, Japanese, Russian, Italian, German, French, US, and Austrian troops, the alliance defeated the Boxers and demanded further concessions from the Qing government.

The early 1900s saw increasing civil disorder, despite reform talk by Cixi and the Qing government. Slavery in China was abolished in 1910.^[28] The Xinhai Revolution in 1911 overthrew the Qing's imperial rule.

Modern China

Main articles: History of the Republic of China and History of the People's Republic of China

Historians agree that the fall of the Qing dynasty demarcated the modern era in Chinese history. Scholars, however, are studying the reasons for that fall in the previous 130 years. Keith Schoppa, the editor ofThe Columbia Guide to Modern Chinese History argues, "A date around 1780 as the beginning of modern China is thus closer to what we know today as historical 'reality."' It also allows us to have a better baseline to understand the precipitous decline of the Chinese polity in the nineteenth and twentieth centuries."^[29]

Republic of China (1912–1949)

Main articles: History of the Republic of China and Republic of China (1912–1949)

Capitals: Nanjing, Beijing, Chongqing, and several short-lived wartime capitals; Taipei after 1949

Sun Yat-sen, founder and first president of the Republic of China.

Frustrated by the Qing court's resistance to reform and by China's weakness, young officials, military officers, and students began to advocate the overthrow of the Qing Dynasty and the creation of a republic. They were inspired by the revolutionary ideas of Sun Yat-sen. A revolutionary military uprising, the Wuchang Uprising, began on 10 October 1911, in Wuhan. The provisional government of the Republic of China was formed in Nanjing on 12 March 1912.

Sun Yat-sen was declared President, but Sun was forced to turn power over to Yuan Shikai, who commanded the New Army and was Prime Minister under the Qing government, as part of the agreement to let the last Qing monarch abdicate (a decision Sun would later regret). Over the next few years, Yuan proceeded to abolish the national and provincial assemblies, and declared himself emperor in late 1915. Yuan's imperial ambitions were fiercely opposed by his subordinates; faced with the prospect of rebellion, he abdicated in March 1916, and died in June of that year.

Yuan's death in 1916 left a power vacuum in China; the republican government was all but shattered. This ushered in the Warlord Era, during which much of the country was ruled by shifting coalitions of competing provincial military leaders.

1919-1929

In 1919, the May Fourth Movement began as a response to the terms imposed on China by the Treaty of Versailles ending World War I, but quickly became a nationwide protest movement about the domestic situation in China. The protests were a moral success as the cabinet fell and China refused to sign the Treaty of Versailles, which had awarded German holdings to Japan. The New Culture Movement stimulated by the May Fourth Movement waxed strong throughout the 1920s and 1930s. According to Ebrey:

"Nationalism, patriotism, progress, science, democracy, and freedom were the goals; imperialism, feudalism, warlordism, autocracy, patriarchy, and blind adherence to tradition where the enemies. Intellectuals struggled with how to be strong and modern and yet Chinese, how to preserve China as a political entity in the world of competing nations."^[30]

The discrediting of liberal Western philosophy amongst leftist Chinese intellectuals led to more radical lines of thought inspired by the Russian Revolution, and supported by agents of the Comintern sent to China by Moscow. This created the seeds for the irreconcilable conflict between the left and right in China that would dominate Chinese history for the rest of the century.

In the 1920s, Sun Yat-sen established a revolutionary base in south China, and set out to unite the fragmented nation. With assistance from the Soviet Union (themselves fresh from a socialist uprising), he entered into an alliance with the fledgling Communist Party of China. After Sun's death from cancer in 1925, one of his protégés, Chiang Kai-shek, seized control of the Kuomintang (Nationalist Party or KMT) and succeeded in bringing most of south and central China under its rule in a military campaign known as the Northern Expedition (1926–1927). Having defeated the warlords in south and central China by military force, Chiang was able to secure the nominal allegiance of the warlords in the North. In 1927, Chiang turned on the CPC and relentlessly chased the CPC armies and its leaders from their bases in southern and eastern China. In 1934, driven from their mountain bases such as the Chinese Soviet Republic, the CPC forces embarked on the Long March across China's most desolate terrain to the northwest, where they established a guerrilla base at Yan'an in Shaanxi Province. During the Long March, the communists reorganized under a new leader, Mao Zedong (Mao Tse-tung).

The bitter struggle between the KMT and the CPC continued, openly or clandestinely, through the 14-year long Japanese occupation of various parts of the country (1931–1945). The two Chinese parties nominally formed a united front to oppose the Japanese in 1937, during the Sino-Japanese War (1937–1945), which became a part of World War II.

Following the defeat of Japan in 1945, the war between the KMT and the CPC resumed, after failed attempts at reconciliation and a negotiated settlement. By 1949, the CPC had established control over most of the country (see Chinese Civil War). Westad says the Communists won the Civil War because they made fewer military mistakes than Chiang, and because in his search for a powerful centralized government, Chiang antagonized too many interest groups in China. Furthermore, his party was weakened in the war against Japanese. Meanwhile the Communists told different groups, such as peasants, exactly what they wanted to hear, and cloaked themselves in the cover of Chinese Nationalism.^[31] When Chiang was defeated by CPC forces in mainland China in 1949, he retreated to Taiwan with his government and his most disciplined troops, along with most of the KMT leadership and a large number of their supporters; Chiang Kai-shek had taken effective control of Taiwan at the end of WWII as part of the overall Japanese surrender, when Japanese troops in Taiwan surrendered to Republic of China troops.^[32]

People's Republic of China (1949–present)

Main article: History of the People's Republic of China

Major combat in the Chinese Civil War ended in 1949 with Kuomintang (KMT) pulling out of the mainland, with the government relocating to Taipei and maintaining control only over a few islands. TheCommunist Party of China was left in control of mainland China. On 1 October 1949, Mao Zedong proclaimed the People's Republic of China.^[33] "Communist China" and "Red China" were two common names for the PRC.^[34]

Chairman Mao Zedong proclaiming the establishment of the People's Republic in 1949.

The PRC was shaped by a series of campaigns and five-year plans, with mixed success. The economic and social plan known as the Great Leap Forward resulted in an estimated 45 million deaths.^[35] In 1966, Mao and his allies launched the Cultural Revolution, which would last until Mao's death a decade later. The Cultural Revolution, motivated by power struggles within the Party and a fear of the Soviet Union, led to a major upheaval in Chinese society.

In 1972, at the peak of the Sino-Soviet split, Mao and Zhou Enlai met Richard Nixon in Beijing to establish relations with the United States. In the same year, the PRC was admitted to the United Nations in place of the Republic of China for China's membership of the United Nations, and permanent membership of the Security Council.

A power struggle followed Mao's death in 1976. The Gang of Four were arrested and blamed for the excesses of the Cultural Revolution, marking the end of a turbulent political era in China. Deng Xiaoping outmaneuvered Mao's anointed successor chairman Hua Guofeng, and gradually emerged as the de facto leader over the next few years.

Deng Xiaoping was the Paramount Leader of China from 1978 to 1992, although he never became the head of the party or state, and his influence within the Party led the country to significant economic reforms. The Communist Party subsequently loosened governmental control over citizens' personal lives and the communes were disbanded with many peasants receiving multiple land leases, which greatly increased incentives and agricultural production. This turn of events marked China's transition from a planned economy to a mixed economy with an increasingly open market environment, a system termed by some^[36] as "market socialism", and officially by the Communist Party of China as "Socialism with Chinese characteristics". The PRC adopted its current constitution on 4 December 1982.

In 1989, the death of former general secretary Hu Yaobang helped to spark the Tiananmen Square protests of 1989, during which students and others campaigned for several months, speaking out against corruption and in favour of greater political reform, including democratic rights and freedom of speech. However, they were eventually put down on 4 June when PLA troops and vehicles entered and forcibly cleared the square, resulting in numerous casualties. This event was widely reported and brought worldwide condemnation and sanctions against the government.^[37][38] The "Tank Man" incident in particular became famous.

CPC general secretary and PRC President Jiang Zemin and PRC Premier Zhu Rongji, both former mayors of Shanghai, led post-Tiananmen PRC in the 1990s. Under Jiang and Zhu's ten years of administration, the PRC's economic performance pulled an estimated 150 million peasants out of poverty and sustained an average annual gross domestic product growth rate of 11.2%.^[39][40] The country formally joined the World Trade Organization in 2001.

Although the PRC needs economic growth to spur its development, the government has begun to worry that rapid economic growth has negatively impacted the country's resources and environment. Another concern is that certain sectors of society are not sufficiently benefiting from the PRC's economic development; one example of this is the wide gap between urban and rural areas. As a result, under former CPC general secretary and President Hu Jintao and Premier Wen Jiabao, the PRC has initiated policies to address these issues of equitable distribution of resources, but the outcome remains to be seen.^[41]More than 40 million farmers have been displaced from their land,^[42] usually for economic development, contributing to 87,000 demonstrations and riots across China in 2005.^[43] For much of the PRC's population, living standards have seen extremely large improvements and freedom continues to expand, but political controls remain tight and rural areas poor.^[44]