Almost all of the Japanese-held island groups…
1936 CE to 1947 CE
Almost all of the Japanese-held island groups become United States Trust Territories after the war.
The US establishes the Trust Territory of the Pacific Islands, which covers some three million square miles of Micronesia, in 1947.
Its four constituent jurisdictions will eventually become the Republic of Palau, the Republic of the Marshall Islands, the Commonwealth of the Northern Marianas and the Federated States of Micronesia.