Historically, what has been the driving force behind the expanding responsibilities of the federal government is because the American people have asked the federal government to do more in the face of economic and social change.
The federal government, which is simply referred to as Washington, is composed of three distinct branches which are legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the president and the federal courts, respectively.
Those powers and duties of these governmental branches are further defined by acts of Congress, including the creation of executive departments and courts inferior to the Supreme Court.
Some examples of an expanded powers of the federal government in the U.S. Constitution includes the power to coin money, to regulate commerce to declare war, to raise and maintain armed forces, and to establish a Post Office.
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