Federalism is a constitutional arrangement in which

Federalism is a constitutional arrangement in which the national and regional governments derive their power from the constitution. This means that each level of government has its own set of powers and responsibilities, and they operate independently of one another. In a federal system, the national government does not have complete control over regional or local authorities, but instead shares power with them. This allows for a more decentralized form of government, where decisions can be made at the local level and tailored to the specific needs of different regions. However, the national government still has ultimate authority over certain areas, such as national defense and foreign policy.