A federal republic is a
federation of
states with a
republican form of government. A federation is composed of a number of self-governing states united by a federal government. In a federation, unlike in a
unitary state, the self-governing status of autonomous regions is constitutionally entrenched and cannot be revoked by a unilateral decision of the central government. The states in a federation also maintain all
political sovereignty that they do not yield to the federation. Usage of the term republic is inconsistent but, as a minimum, it means a state or federation of states that does not have a
monarch as
head of state.
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