What were the causes of the Opium War?
Both the First Opium War and the Second Opium War were fought between Britain and China. The disputes arose over diplomatic relations, trade, and the legal status of foreign nationals.
he opium war was started by the british people selling opium to the Chinese people for their goods. The emporer of china was angry because of all of the people always on opium so he made it illegal to sell or buy opium. When Britain kept selling the opium illegaly, that's what started the war. heroin addicts.