Australia is the smallest continent on Earth, and the only one to be governed as a single country.

East Timor, or Timor-Leste, is a country on the eastern part of Timor Island located in Southeast Asia.

Papua New Guinea, occupying the eastern part of the world's second largest island, is known for its rich biodiversity.

Indonesia, officially known as the Republic of Indonesia, is located between the Indian and Pacific Oceans. It is the world's largest island country.

Pakualaman is a small hereditary principality within Yogyakarta.

Palau is a tropical paradise made up of around 340 islands, forming the western chain of the Caroline Islands in Micronesia.

The Solomon Islands consist of a double chain of volcanic islands and coral atolls in the Melanesian region of the South Pacific.

The South Seas Mandate comprised a group of islands in the Pacific, officially administered by Japan.

Vanuatu, officially known as the Republic of Vanuatu, is an island country found in the South Pacific Ocean.

Brunei, officially the Nation of Brunei, the Abode of Peace, is located on the north coast of the island of Borneo in Southeast Asia.