powers shared by both the national government and the states are called A)reserved,B)expressed C)concurrent D)inherent, powers

See http://en.wikipedia.org/wiki/Concurrent_powers

The powers that are shared by both the national government and the states in the United States are called concurrent powers. These powers are specifically outlined in the U.S. Constitution and are essential for maintaining a balance of power between the federal government and the individual states.

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