Asystem of government in which power is divided between a central authority and constituent political subunits is

Federal system. A Federal system is a system of government in which power is divided between a central authority and constituent political subunits. In most cases this system divides the powers of government and administration between the federal government and state and local governments. Federalism and the federal system defines the basic structure of many country's government.

Ialso think the answer to this is korean