
The South Seas Mandate, officially the Mandate for the German Possessions in the Pacific Ocean lying North of the Equator, was a League of Nations mandate in the "South Seas" given to the Empire of Japan by the League of Nations following World War I. The mandate consisted of islands in the north Pacific Ocean that had been part of German New Guinea within the German colonial empire until they were occupied by Japan during World War I. Japan governed the islands under the mandate as part of the Japanese colonial empire 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.

The Caroline Islands are a widely scattered archipelago of tiny islands in the western Pacific Ocean, to the north of New Guinea. Politically they are divided between the Federated States of Micronesia in the eastern part of the group, and Palau at the extreme western end. Historically, this area was also called Nuevas Filipinas or New Philippines as they were part of the Spanish East Indies and governed from Manila in the Philippines.

The Governor of the South Seas Mandate was an official who ruled the South Seas Mandate, a Class C League of Nations mandate in the Pacific Ocean under the administration of the Empire of Japan, as part of the Japanese colonial empire, between 1922 and 1944. The territory consisted of islands awarded to Japan by the League of Nations after World War I, prior to which they had been part of the German colonial empire. During World War II, the United States captured the islands from Japan. After World War II, the United Nations placed the territory under the United States trusteeship as the Trust Territory of the Pacific Islands. The islands are now part of Palau, Northern Mariana Islands, Federated States of Micronesia, and Marshall Islands.

The Marshall Islands, officially the Republic of the Marshall Islands, is an island country and an associated state of the United States near the Equator in the Pacific Ocean, slightly west of the International Date Line. Geographically, the country is part of the larger island group of Micronesia. The country's population of 58,413 people is spread out over 29 coral atolls, comprising 1,156 individual islands and islets. The capital and largest city is Majuro. It has the largest portion of its territory made of water of any sovereign state, at 97.87%.
Nanyo Shrine is a Shinto shrine located on the island of Koror, in Palau. The shrine was the ichinomiya of the government of the South Seas Mandate, a League of Nations mandated territory administered by the Empire of Japan. It was established in 1940 and designated for the veneration of Amaterasu Omikami.

The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands, is an insular area and commonwealth of the United States consisting of 14 islands in the northwestern Pacific Ocean. The CNMI includes the 14 northernmost islands in the Mariana Archipelago; the southernmost island, Guam, is a separate U.S. territory. The CNMI and Guam are the westernmost territories of the United States.

Palau, officially the Republic of Palau and historically Belau, Palaos or Pelew, is an island country located in the western Pacific Ocean. The country contains approximately 340 islands, and together with parts of the Federated States of Micronesia, forms the western chain of the Caroline Islands. Its area is 466 square kilometers (180 sq mi). The most populous island is Koror. The capital Ngerulmud is located on the nearby island of Babeldaob, in Melekeok State. Palau shares maritime boundaries with international waters to the north, Micronesia to the east, Indonesia to the south, and the Philippines to the west.

Yap or Wa′ab traditionally refers to an island group located in the Caroline Islands of the western Pacific Ocean, a part of Yap State. The name "Yap" in recent years has come to also refer to the state within the Federated States of Micronesia, inclusive of the Yap Main Islands and its various outer islands. For specifying the island group, the name Yap Main Islands is most exact.