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The more common school follows historical convention and treats Europe and Asia as different continents, categorizing East Asia, South Asia, and the Middle East as specific regions for more detailed analysis. Other schools equate the word "continent" to geographical "region" when referring to Europe and Asia in terms of physical geography.
[71] [72] As geographic knowledge of the Greeks increased during the Hellenistic period, [73] this archaic convention was revised, and the boundary between Asia and Europe was now considered to be the Tanais (the modern Don River). This is the convention used by Roman era authors such as Posidonius, [74] Strabo [75] and Ptolemy. [76]
Geographical boundaries of Asia [ edit ] The divisions between Asia and Europe occur at the Ural Mountains , Ural River , and Caspian Sea in the east, the Caucasus Mountains and the Black Sea , Bosporus Sea of Marmara , Dardanelles and the Aegean Sea in the south.
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area (or 30% of its land area) and with approximately 4.655 billion people, it hosts 60% of the world's current human population .
Therefore, Asia is a region where various independent cultures coexist rather than sharing a single culture, and the boundary between Europe is somewhat arbitrary and has moved since its first conception in classical antiquity. The division of Eurasia into two continents reflects East–West cultural differences, some of which vary on a spectrum.
See below. Only land boundaries are considered; maritime boundaries are excluded; see the List of countries and territories by maritime boundaries. Disputed territories are not considered, other than the inclusion by necessity, in a neutral fashion, of Western Sahara.)
Geography of Asia by region (20 C) * Asia geography-related lists (43 C, 3 P) A. Administrative divisions in Asia (57 C, 133 P) C. ... Boundary between Asia and ...
The boundaries of South Asia vary based on how the region is defined. South Asia's northern, eastern, and western boundaries vary based on definitions used, while the Indian Ocean is the southern periphery. Most of this region rests on the Indian Plate and is isolated from the rest of Asia by mountain barriers.