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Australasia is a subregion of Oceania, comprising Australia, New Zealand (overlapping with Polynesia), and sometimes including New Guinea and surrounding islands (overlapping with Melanesia). The term is used in a number of different contexts, including geopolitically , physiogeographically , philologically , and ecologically , where the term ...
[6] [7] Spanning the Eastern and Western hemispheres, at the centre of the water hemisphere, Oceania is estimated to have a land area of about 9,000,000 square kilometres (3,500,000 sq mi) and a population of around 46.3 million as of 2024. Oceania is the smallest continent in land area and the second-least populated after Antarctica.
This is a list of sovereign states and dependent territories in the geographical region of Oceania. Although it is mostly ocean and spans many tectonic plates, Oceania is occasionally listed as one of the continents. Most of this list follows the boundaries of geopolitical Oceania, which includes Australasia, Melanesia, Micronesia, and Polynesia.
Location of Oceania. The following outline is provided as an overview and topical guide to Oceania. Oceania is a geographical, and geopolitical, region consisting of numerous lands—mostly islands in the Pacific Ocean and vicinity. The term is also sometimes used to denote a continent comprising Australia and proximate Pacific islands.
Oceania with its sovereign and dependent islands within the subregions Melanesia, Micronesia, Polynesia and Australasia. The United Nations geoscheme subdivides the region into Australia and New Zealand, Melanesia, Micronesia, and Polynesia.
It has historically been included in definitions of Oceania, ever since the term was first coined in the early 1810s. In the 19th century, many geographers divided up Oceania into mostly racially-based subdivisions; Australasia, Malaysia (encompassing the Malay Archipelago), Melanesia, Micronesia and Polynesia. [56]
Micronesia is a region in Oceania that includes approximately 2100 islands, with a total land area of 2,700 km 2 (1,000 sq mi), the largest of which is Guam, which covers 582 km 2 (225 sq mi). The total ocean area within the perimeter of the islands is 7,400,000 km 2 (2,900,000 sq mi).
Oceania is commonly divided into four geographic sub-regions, characterized by shared cultural, religious, linguistic, and ethnic traits: Australasia, Melanesia, Micronesia, and Polynesia. Most Oceanian countries are multi-party representative parliamentary democracies, and tourism is a large source of income for the Pacific Islands nations.