The French maintained full control over their colonies until World War II, when the war in the Pacific led to the Japanese invasion of French Indochina in 1940. Afterwards, the Japanese Empire was allowed to station its troops in Vietnam while permitting the pro-Vichy French colonial administration to continue. Japan exploited Vietnam's natural resources to support its military campaigns, culminating in a full-scale takeover of the country in March 1945. This led to the Vietnamese Famine of 1945, which resulted in up to two million deaths.