Oceania (UK: , US: (listen), ) is a geographic region that includes Australasia, Melanesia, Micronesia and Polynesia. Spanning the Eastern and Western Hemispheres, Oceania has a land area of 8,525,989 square kilometres (3,291,903 sq mi) and a population of over 41 million. When compared to continents, the region of Oceania is the smallest in land area and the second smallest in population after Antarctica.
Oceania has a diverse mix of economies from the highly developed and globally competitive financial markets of Australia, New Caledonia and New Zealand, which rank high in quality of life and human development index, to the much less developed economies such as Papua New Guinea, Indonesian New Guinea, Kiribati, Vanuatu and Tuvalu, while also including medium-sized economies of Pacific islands such as Palau, Fiji and Tonga. The largest and most populous country in Oceania is Australia, and the largest city is Sydney.The first settlers of Australia, New Guinea, and the large islands just to the east arrived more than 60,000 years ago. Oceania was first explored by Europeans from the 16th century onward. Portuguese navigators, between 1512 and 1526, reached the Tanimbar Islands, some... Wikipedia ()