proper noun/ɛ̃.dɔ.ʃin fʁɑ̃.sɛz/
Indochine française is feminine in French.
French Indochina (a former French colony, mostly in mainland Southeast Asia, that existed between 1887 and 1954 and was created from the colonies of Annam, Cambodia, Cochinchina, Laos and Tonkin, as well as the territory of Guangzhouwan; modern-day Cambodia, Laos and Vietnam)