In the United States, the states share power with the national government but must follow federal laws. This is an example of Federation type of government.
Answer: option A
Explanation:
The United States, has the 50 constituent states which shares power with the national government but has the federal laws to be followed as well. The federation form of governance or the federalism is the property of governance.
There is a national government with many supporting regional or small government as well. It is form of mixed or compound type of government system.