Vietnam War
France began to colonize Vietnam between 1859 and 1862, when it took control of Saigon. By 1864, it had controlled all of Cochinchina, in the south of Vietnam. France took control of Annam, the large central part of Vietnam, in 1874. After France defeated China during the Sino-French War (1884–1885), it took over Tonkin, the north of Vietnam. French Indochina was formed in October 1887 from these three areas of Vietnam (Cochinchina, Annam and Tonkin), as well as Cambodia. Laos was added after a war against Thailand, the Franco-Siamese War, in 1893.