Nation state

The nation state is a state that self-identifies as deriving its political legitimacy from serving as a sovereign entity for a nation as a sovereign territorial unit.[1] The state is a political and geopolitical entity; the nation is a cultural and/or ethnic entity. The term "nation state" implies that the two geographically coincide, which distinguishes the nation state from the other types of state, which historically preceded it.
The concept of a nation state is sometimes contrasted with city

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