St Benedict of Nursia I believe...
Answer:
the Soviet Union was becoming behind the U.S. wealthiest country on earth.
imperialism is one nation or group (usually, but not always forcefully) controlling another, so it's not A. colonialism is one nation or group forcefully controlling another and exploiting it economically, so it's not B. utopian socialism is convincing capitalists to peacefully give power to the socialists, so it's not C.
according to the process of elimination, the answer is D. hope this helped!
The correct answer is A. While the states are free to make their own laws they cannot make laws that violate the constitution. For example a state cant legalize murder.