He enacted Qin's legalist reforms throughout China, notably the forced standardization of Chinese characters, measurements, road widths (i.e., cart axles' length), and currency.His dynasty also conquered the Yue tribes in Guangxi, Guangdong, and Vietnam.The Jin fell to civil war upon the ascension of a developmentally-disabled emperor; the Five Barbarians then invaded and ruled northern China as the Sixteen States.The Xianbei unified them as the Northern Wei, whose Emperor Xiaowen reversed his predecessors' apartheid policies and enforced a drastic sinification on his subjects, largely integrating them into Chinese culture.China emerged as one of the world's earliest civilizations, in the fertile basin of the Yellow River in the North China Plain.For millennia, China's political system was based on hereditary monarchies, or dynasties, beginning with the semi-legendary Xia dynasty in 21st century BCE.
Since the introduction of economic reforms in 1978, China's economy has been one of the world's fastest-growing with annual growth rates consistently above 6 percent The PRC is a member of the United Nations, as it replaced the ROC as a permanent member of the UN Security Council in 1971.
The Song was the first government in world history to issue paper money and the first Chinese polity to establish a permanent standing navy which was supported by the developed shipbuilding industry along with the sea trade.
Between the 10th and 11th centuries, the population of China doubled in size to around 100 million people, mostly because of the expansion of rice cultivation in central and southern China, and the production of abundant food surpluses.
By the time of the Warring States period of the 5th–3rd centuries after the state of Qin conquered the other six kingdoms and established the first unified Chinese state.
King Zheng of Qin proclaimed himself the First Emperor of the Qin dynasty.
Han China gradually became the largest economy of the ancient world.