In a federal system of government, power is divided between the national government and the states, allowing both levels to govern effectively. This balance prevents any one entity from accumulating too much power. The example of the United States illustrates how this division works in practice. ;
In a federal system of government, power is divided between the national government and the states, ensuring a balance of authority. This distribution allows both levels to govern effectively and prevents any one body from having excessive power. Thus, the correct answer is option A.
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