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Second Opium War 1856-1860

State Entry Exit Combat Forces Population Losses
Britain 1856 1860 50000 30000000 4000
China 1856 1860 2000000 410000000 6000

In 1856 the British, seeking to extend their trading rights in China, found an excuse to renew hostilities when some Chinese officials boarded the ship Arrow and lowered the British flag. The French joined the British in this war, using as their excuse the murder of a French missionary in the interior of China.

The allies began military operations in late 1857 and quickly forced the Chinese to sign the treaties of Tientsin (1858), which provided residence in Peking for foreign envoys, the opening of several new ports to Western trade and residence, the right of foreign travel in the interior of China, and freedom of movement for Christian missionaries. In further negotiations in Shanghai later in the year, the importation of opium was legalized. The Chinese, however, refused to ratify the treaties, and the allies resumed hostilities, captured Peking, and burned the emperor's summer palace. In 1860 the Chinese signed the Peking Convention, in which they agreed to observe the treaties of Tientsin.

Last Update: December 16, 2000

Armed Conflict Events Database

Armed Conflict Events Data (ACED) is an research project providing independent information about known wars, international disputes, civil wars, rebellions, coups, revolutions, genocides and other violent conflicts. ACED has been online since December 2000. Various partial revisions and modifications have been implemented since then, however, the limitations of the this format hamper further development. During 2005, the decision was made to radically restructure the available conflict information into a database. The new Armed Conflict Events Database (ACEDb) will substantially increase the utility of available conflict data for students of military history. As well, it will offer expanded opportunities to add and edit records of conflict. Existing research material will be maintained in its present form but no revisions are planned. More news about the development of ACEDb may be found at News About the Armed Conflict Events Database. Feedback is welcome.