Regional state
A regional state, or a regionalised unitary state, is a term used to denote a type of state that is formally unitary but where a high degree of political power has been highly decentralised to regional governments. This contrasts with a state organized on principles of federalism (either a federal republic such as the United States, Brazil, or India or a federal monarchy such as Belgium or Malaysia) where the powers of the regions are enshrined in constitutional law.