premise: French Indochina was a grouping of French colonial dogs in Southeast Asia.
hypothesis: French Indochina ( previously spelled as French Indo-China ) ( Indochine française សហភ ពឥណ ឌ ច ន Đông Dương thuộc Pháp , [ ɗə̄wŋm jɨ̄əŋ tʰûək fǎp ] , frequently abbreviated to Đông Pháp ; ຝຣັ່ງແຫຼັມອິນດູຈີນ Cantonese : ) , 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 .