A system of government in which the central government is supreme over other levels is

The system of government in which the central government is supreme and has the most power over other levels is called a unitary system. In this type of system, the central government makes all the important decisions, and the lower levels of government, such as regional or local governments, have limited power and authority. In a unitary system, the central government can create or abolish regional or local governments, change their powers and responsibilities, and override their decisions if it sees fit. Examples of countries with a unitary system of government include France, China, and the United Kingdom.