Final answer:
The U.S. federalist system divides powers among national and state governments with expressed, reserved, and concurrent powers. The Tenth Amendment limits the national government by reserving undelegated powers to the states or the people, ensuring a balance and preventing central dominance.
Step-by-step explanation:
Dear Friend,
In the United States, the federalist system of government divides powers between the national government and the state governments. Under this system, expressed powers are those given specifically to the national government, such as coining money or regulating interstate commerce; reserved powers are held by the states, covering things like education and local law enforcement; and concurrent powers are shared by both levels, such as taxing and building roads.
The Tenth Amendment serves as a constitutional boundary that limits the national government by stating any powers not delegated to the United States by the Constitution, nor prohibited by it to the States, belong to the States or to the people. This federalist structure ensures a balance of power, preventing any one governmental branch from becoming too dominant and preserving the sovereignty of the states within the union.