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Third parties may also help voter turnout by bringing more people to the polls. Third party candidates at the top of the ticket can help to draw attention to other party candidates down the ballot, helping them to win local or state office.
I think it is an important part of U.S. democracy because it contributes the the U.S. in a major way. The creators of the U.S. Constitution worked to ensure the military would be under civilian control. When they wrote the Constitution they separated the responsibilities for the military, placing the responsibilities firmly in civilian hands. Congress has the power to declare war and to make the rules for governing the military. There are some disadvantages, though. The American Civil War of 1861-1865 was the period of greatest danger to civilian control of the military. As the war progressed, more and more people called for a military dictatorship. Military officers stayed away from politics and many even refused to vote, feeling that this would somehow influence their service.
Yes Power is divided between the a national government and state government.
The Federalism is the system of government in which power is divided between a central government and regional governments in the United States, both the national government and the state governments possess a large measure of sovereignty. Hope this helps, good luck.