<Tr> <Td> </Td> <Td> This article contains Lao text . Without proper rendering support, you may see question marks, boxes, or other symbols instead of Lao script . </Td> </Tr> <P> French Indochina (previously spelled as French Indo - China) (French: Indochine française; Khmer: សហភាព ឥណ្ឌូចិន; Vietnamese: Đông Dương thuộc Pháp, IPA: (ɗə̄wŋm jɨ̄əŋ thûək fǎp), frequently abbreviated to Đông Pháp; Lao: ສະຫະພັນອິນດູຈີນ; Chinese: 法 屬 印度 支那), officially known as the Indochinese Union (French: Union indochinoise) after 1887 and the Indochinese Federation (French: Fédération indochinoise) after 1947, was a grouping of French colonial territories in Southeast Asia . </P> <P> 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 . </P> <P> After the Fall of France during World War II, the colony was administered by the Vichy government and was under Japanese occupation until March 1945, when the Japanese overthrew the colonial regime . Beginning in May 1941, the Viet Minh, a communist army led by Hồ Chí Minh, began a revolt against the Japanese . In August 1945 they declared Vietnamese independence and extended the war, known as the First Indochina War, against France . </P>

When did vietnam become part of the french empire