A continent is defined as a large unbroken land mass completely surrounded by water, although in some cases continents are (or were in part) connected by land bridges. The seven continents are North America, South America, Europe, Asia, Africa, Australia, and Antarctica. The island groups in the Pacific are often called Oceania but this name does not imply that scientists consider them the remains of a continent.
Political considerations have often overridden geographical facts when it came to naming continents. Geographically, Europe, including the British Isles, is a large western peninsula of the continent of Asia; and many geographers, when referring to Europe and Asia, speak of the Eurasian continent. But traditionally, Europe is counted as a separate continent, with the Ural and the Caucasus mountains forming the line of demarcation between Europe and Asia. To the south of Europe, Asia has an odd-shaped peninsula jutting westward, which has a large number of political subdivisions. The northern section is taken up by Turkey; to the south of Turkey there are Syria, Iraq, Israel, Jordan, Saudi Arabia, and a number of smaller Arab countries. All these are part of Asia. Traditionally, the island of Cyprus in the Mediterranean is also considered to be part of Asia. The Caribbean islands, Central America, and Greenland are considered part of North America.
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