When Did Japan Acquire French Indonesia?
On January 7th, 1941, Japan and France signed the Treaty of Commerce and Navigation, which effectively recognized Japanese control over French Indochina in exchange for French recognition of Japanese control over the northern part of the island of Formosa (now Taiwan).
Under the treaty, Japan gained the right to station troops in French Indochina, and to establish a naval base at Cam Ranh Bay. In addition, Japan was given preferential treatment in the economic …