Opium Wars Opium Wars The Opium Wars were two wars in the mid-19th century involving China and the British Empire over the British trade of opium and China's sovereignty. The clashes included the First Opium War (1839–1842) and the Second Opium War (1856–1860). The wars and events between them weakened the Qing dynasty and forced China to trade with the other parts of the world. In 1820, China's economy was the largest in the world, according to British economist Angus Maddison. Within a decade after the end of the Second Opium War, China's share of global GDP had fallen by half. In
Immigration to China homeland. Several million may have done so since 1949. The largest influx came in 1978–79, when about 160,000 to 250,000 ethnic Chinese refugees fled Vietnam for southern China, as relations between the two countries worsened. Many of these refugees were settled in state farms on Hainan Island in the South China Sea. Another activity viewed as illegal is the influx of North Koreans into northeastern China. Some 1,850 North Koreans fled their country in 2004, but China views them as illegal economic migrants rather than refugees and sends many of them back. This is also due to pressure from North