In political geography, a regional state is a state more centralized than a federation, but more decentralized than a unitary state. Regional states include federations in which power has become more centralized, and unitary states in which some power has been devolved to regional governments. This term has yet to become widely used.
Subnational regions are intermediate level between local and national government.
List of unitary states with devolution
- Glassner, Martin Ira. Political Geography, 2nd Edition. New York: John Wiley & Sons Inc., 1995.