History glossary

Treaty of Nanjing

the 1842 agreement ending the First Opium War, which forced the Qing to open five ports to British trade, cede Hong Kong Island, and pay an indemnity.

Category
Treaty
Region
China and Britain
Date range
1842

What it means

Signed on 29 August 1842 at Nanjing, also written Nanking, the treaty ended the First Opium War between Britain and Qing China. It opened five Chinese ports to British trade, ceded Hong Kong Island to Britain, and required a large indemnity. It became a leading example of the unequal treaties imposed on China after military defeats. Additional foreign privileges, including British extraterritorial rights, were established through subsequent agreements.

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