'federalise' definitions:

Put under the control and authority of a federal government [syn: federalize, federalise]

Enter into a league for a common purpose; "The republics federated to become the Soviet Union" [syn: federate, federalize, federalise]

Unite on a federal basis or band together as a league; "The country was federated after the civil war" [syn: federate, federalize, federalise]