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A regional state is a unitary state in which authority has been decentralized to subnational regions. This term has yet to become widely used. One such example of a state is Ethiopia, which has been divided into ethnic-based regions.
Subnational regions are intermediate level between local and national government.
- Glassner, Martin Ira. Political Geography, 2nd Edition. New York: John Wiley & Sons Inc., 1995.