Answer:
Taxes may be levied on U.S. citizens by both the federal and state governments. This is an example of concurrent powers.
Step-by-step explanation:
Concurrent powers refer to those powers enjoyed by state governments and the federal government of the U.S. These powers are usually excercised simultaneously within the same area and among the same citizens. The powers to tax, to build roads and to create lower courts are some examples of concurrent powers.