Treaty of Nanking ends the First Opium War

Background. The treaty emerged from the Anglo-Chinese War, where British naval superiority defeated Qing forces by August 1842. It was the second unequal treaty, following the rejected 1841 Convention of Chuenpi, which the treaty was largely based on. The agreement granted an indemnity and extraterritoriality to British subjects, opened five treaty ports to British merchants, and ceded Hong Kong Island to the British Empire in perpetuity.

Key Provisions. The treaty required the Qing government to pay substantial indemnities, including 6 million silver dollars for confiscated opium and 12 million for war reparations. It granted extraterritoriality to British subjects and opened five treaty ports. Crucially, it ceded Hong Kong Island to the British Empire in perpetuity, formalizing colonial control.

Ratification. Although signed in August 1842, the exchange of ratification documents occurred later in Hong Kong on 26 June 1843. This process solidified the legal framework for British colonial administration, which lasted until the 1997 handover. The treaty's terms were later expanded by the Treaty of the Bogue in 1843.