What was the Truman Doctrine? A. An alliance of nations that promised to defend one another in the
event of an attack

B. An American policy to try to stop the spread of Communism
anywhere in the world

C. An American program of economic aid to free and democratic
nations after World War II

D. A program to deliver aid to West Berlin in response to a Soviet
blockade

How does the supremacy clause of the u.s. constitution affect the states? o a. it requires each state to establish a supreme court. b. it declares that the federal government can take away state powers if necessary. o c. it allows state governments to overthrow the federal government if necessary. o d. it ensures that the u.s. constitution overrules each state constitution