Which has emerged as the world’s main political unit? the state the legislature the courts the president

The state has emerged as the world's main political unit.

Explanation:

A State is a political organization constituted by stable bureaucratic institutions, through which it exercises the monopoly of the use of force and sovereignty, applied to a population within established territorial limits. Every State is, therefore, endowed with territory, population and sovereignty.

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it is a : ) always outside of government control