define unitary government
A unitary system of government, or unitary state, is a sovereign state governed as a single entity. The central government is supreme, and the administrative divisions exercise only powers that the central government has delegated to them.nitary states contrast with federal states, such as the United States, in which power is shared between the federal government and the states. (The states themselves are unitary.) More than 150 countries are unitary states, including France, China, and Japan.