Unitary System

 A unitary system is a form of government in which authority is concentrated in the central government. Local governments, such as those of regions or cities, are under the control of the central government.This distinguishes a unitary system from the government of a federal state, in which the federation's constituent units themselves have at least some attributes of a sovereign state in their own right that the federal government must respect, and from confederations, in which sovereign states delegate certain powers to a supranational organization.