Asia, the world’s largest and most diverse continent. It occupies the eastern four-fifths of the giant Eurasian landmass.
Europe is the second-smallest continent, and it could be described as a large peninsula or as a subcontinent. Europe is the western portion of the Eurasian landmass and is located entirely in the Northern Hemisphere. Several larger islands belong to Europe, such as Iceland or the British Isles with the UK and Ireland.
New Zealand and Australia are both part of the Oceanian sub-region known as Australasia, with New Guinea being in Melanesia. New Zealand is not part of the continent of Australia, but of the separate, submerged continent of Zealandia.
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North AmericaThe United States shares significant land borders with Canada to the north and Mexico to the south as well as limited maritime borders with the Bahamas, Cuba, and Russia.
Africa is the world’s second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million kmĀ² including adjacent islands, it covers 6% of Earth’s total surface area and 20% of its land area. With 1.3 billion people as of 2018, it accounts for about 16% of the world’s human population.