The Yangtze river occupies an important place

History of yangze river	History of yangze river

The Yangtze river occupies an important place in the cultural origins of southern China. Human activity was found in the Three Gorges area as far back as 2 million years ago, initiating debate over the origin of the Chinese people.[3] In the Spring and Autumn Period, Ba and Shu were located in the western part of the river, covering modern Sichuan, Chongqing, and western Hubei; Chu was located in the central part of river, corresponding to Hubei, Hunan, Jiangxi, and southern Anhui. Wu and Yue were located in the eastern part of the river, now Jiangsu, Zhejiang, and Shanghai. Although the Yellow River region was richer and more developed at that time, the milder climate and more peaceful environment made the Yangtze River area more suitable for agriculture. From the Han Dynasty, the region of the Yangtze River became more and more important in China's economy. The establishment of irrigation systems (the most famous one is Dujiangyan, northwest of Chengdu, built during the Warring States period) made agriculture very stable and productive. Early in the Qing dynasty, the region called "Jiangnan" (includes the southern part of Jiangsu, the northern part of Zhejiang, and the southeastern part of Anhui) provided 1/3-1/2 of the nation's revenues.
Historically, the mighty Yangtze river became the political boundary between north China and south China several times (see History of China) because of the difficulty of crossing the river. A lot of battles took place along the river, the most famous being the Battle of Red Cliffs in 208 AD during the Three Kingdoms period. Politically, Nanjing was the capital of China several times, although most of the time its territory only covered the southeastern part of China, such as the Wu kingdom in the Three Kingdoms period, the Eastern Jin Dynasty, and smaller countries in the Northern and Southern Dynasties and Five Dynasties and Ten Kingdoms periods. Only the Ming occupied most parts of China from their capital at Nanjing, though it later moved capital to Beijing. The ROC capital was located in Nanjing in the periods 1911-1912, 1927-1937, 1945-1949.