Federalism allows laws to enforce on to its own citizens. The United States both the nation and the individual states impose taxes, pass laws, and maintain their own court systems. The Constitution cannot be changed or dissolved without the consent of both the state and the nation.
Federalism differs from unitary system in which the nation and the state governments get their power directly from the people, the citizens versus the nation giving powers or authority to the states, federalism also differs from Confederate Government whereas, independent states creates a central government with limited power; whereby, the states have authority over all matters except those few which have been expressly delegated to the central government. There however, are advantages and disadvantages, for having a federalism of government. The advantages and disadvantages are one in the same unity, diversity, and influence i.e Unity the advantage of unity and a federalism society or government is the nation can make binding powers to support the needs of all citizens. The disadvantage of unity in a federalism government is that they do have the binding powers