Papua New Guinea, is an island country in Oceania that comprises the eastern half of the island of New Guinea and offshore islands in Melanesia, a region of the southwestern Pacific Ocean north of Australia. It has a land border with Indonesia to the west and neighbors Australia to the south and the Solomon Islands to the east. Its capital, on its southern coast, is Port Moresby. The country is the world’s third largest island country, with an area of 462,840 km2 (178,700 sq mi). The nation was split in the 1880s between German New Guinea in the North and the British Territory of Papua in the South, the latter of which was ceded to Australia in 1902. All of present-day Papua New Guinea came under Australian control following World War I, with the legally distinct Territory of New Guinea being established out of the former German colony as a League of Nations mandate.