The physics definition of period is the duration of one complete cycle of a wave or oscillation.
Federalism- a form of government where a group of states, territories, etc., are governed by one central power. Federalists- a member of the Federalist party. Dual Federalism-the federal government and the statesâ government have separate, but equal, powers.
Defining federalism. Federalism is a system of shared power between two or more governments with authority over the same people and geographical area. Unitary systems of government, by far the most common form around the world, have only one source of power, the central or national government.