a former french protectorate that is now part of vietnam
French Indochina (previously spelled as French Indo-China) (French: Indochine française; Khmer: សហភាពឥណ្ឌូចិន; Vietnamese: Đông Dương thuộc Pháp, pronounced [ɗoŋm zɰəŋ tʰuə̀k fǎp], frequently abbreviated to Đông Pháp; Lao: ຝຣັ່ງແຫຼັມອິນດູຈີນ; Cantonese: 法屬印度支那; faat3 suk6 jan3 dou6 zi1 naa5), officially known as the Indochinese Union (Union indochinoise) after 1887 and the Indochinese Federation (Fédération indochinoise) after 1947, was a grouping of French colonial territories in Southeast Asia.
A grouping of the three Vietnamese regions of Tonkin (north), Annam (centre), and Cochinchina (south) with Cambodia was formed in 1887. Laos was added in 1893 and the leased Chinese territory of Guangzhouwan in 1898. The capital was moved from Saigon (in Cochinchina) to Hanoi (Tonkin) in 1902 and again to Da Lat (Annam) in 1939. In 1945 it was moved back to Hanoi.