Mezue ahịrịokwu na-esonụ: Mgbe Agha France na ọdịda nke French Third Republic, nchịkwa nchịkwa nke Indochina (Vietnam nke oge a, Laos na Cambodia) gafere Vichy France. Na September 1940, ndị agha Japan banyere n'akụkụ ụfọdụ nke Indochina; na July 1941, Japan weghaara ókèala ahụ dum. Thailand jiri ohere a weghachite mpaghara ndị furu efu na mbụ, na-ebute Agha Franco-Thai n'etiti Ọktọba 1940 na Mee 1941. Japan ji Indochina malite akụkụ nke ya
mwakpo a wakporo Malaya; nke a na mwakpo a wakporo Pearl Harbor na mpaghara ndị ọzọ nke Britain na America kpalitere Agha Pacific, na-eweta Agha Worldwa nke Abụọ na Indochina.