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
Ryukyuan missions to Imperial China Ryukyuan missions to Imperial China Ryukyuan missions to Imperial China were diplomatic missions which were intermittently sent from the Ryukyuan kings to the Ming and Qing emperors. These diplomatic contacts were within the Sinocentric system of bilateral and multinational relationships in East Asia. A total of 347 Ryukyuan missions to China have been recorded. King Satto of Chūzan established formal relations with China in 1374. Satto became the first Ryukyuan king to send a mission to China. He was also the first to receive investiture and to submit to Chinese suzerainty in 1372. The Ming and Qing archival records identify