Asia is the largest and most populous continent and is a continent in the seven continent system. Asia consists of forty-eight countries as per the United Nations along with many other highly autonomous regions and disputed areas that are often generalised as countries of their own.
Source: https://simple.wikipedia.org/wiki/List_of_countries_by_continents

There is no official boundary between Europe and Asia, however Armenia, Azerbaijan, Georgia and Turkey are considered a part of Asia by the United Nations.

Taiwan is not a member of the United Nations due to the ongoing dispute with the People’s Republic of China

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