superstate

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Английский Язык - Турецкий язык
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Английский Язык - Английский Язык
A state formed by the union of multiple lesser states

The euro is the currency of the European superstate.

{i} state or government which rules over subordinate states
A superstate is a group of several countries that are very closely linked politically. a European superstate. a group of countries that are connected very closely politically, and who often act as if they were one country