In a unitary system of government, local offices

 In a unitary system of government, all local offices and units are subject to the central authority, which has control over them. The opposite is the federal system, where local units are partially autonomous.
Explanation:
In a unitary system the central government usually gives authority to subnational units and channels policy selections all the way down to them for execution. A majority of nation-states are unitary systems. They vary greatly. ... The ultimate native government in an exceedingly unitary system are subject to a central authority.