federism
Federism is a political concept that describes a system of government where power is divided between a central national authority and constituent political units, such as states or provinces. This division of power is typically enshrined in a constitution, which outlines the specific responsibilities and jurisdictions of each level of government. Federism is distinct from a unitary system, where the central government holds all the power, and a confederacy, where the constituent units retain more autonomy and the central authority is weaker.
Key characteristics of federism include the existence of a supreme constitution that cannot be unilaterally changed