The South Pacific Mandate was a League of Nations mandate given to the Empire of Japan by the League of nations following World War I. The South Pacific Mandate consisted of islands in the north Pacific Ocean that were part of the German colonial empire and were occupied by Japan during World War I. Japan governed the islands until World War II when the United States captured the islands. The islands then became the United Nations-established Trust Territory of the Pacific Islands governed by the United States. The islands are now part of Palau, Northern Mariana Islands, Federated States of Micronesia, and Marshall Islands.