Fought between British and Chinese forces in Chapu (Zhapu), China, in 1842 during the First Opium War

1842 punitive campaign undertaken by the British following the disastrous retreat from Kabul

Battle on September 17, 1842, between Mexico and the Republic of Texas

1842 riots in Staffordshire, England

1842 battle between Peru and Bolivia

Riot in Muncy, Pennsylvania

First Opium War battle near Shanghai (1842)

1842 border resolution between U.S. and British North American colonies (now Canada)

Clash between lawmakers and public

Treaty of Nanjing — 1842 treaty between Qing China and Britain which ceded Hong Kong and ended the First Opium War

Cession treaty between the United States and representatives of the Sauk and Meskwaki peoples