Federation
Federation
! Federal states [Unitary states](//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Mapofunitaryandfederalstates.svg/500px-Mapofunitaryandfederalstates.svg.png)
Federation
A federation (also called a federal state) is an entity characterized by a union of partially self-governing provinces, states, or other regions under a federal government (federalism). In a federation, the self-governing status of the component states, as well as the division of power between them and the central government, is constitutionally entrenched and may not be altered by a unilateral decision, neither by the component states nor the federal political body without constitutional amendment.
Federation
Sovereign power is formally divided between a central authority and a number of constituent regions so that each region retains some degree of control over its internal affairs.