How did the panama canal boost commerce? PLEASE HELP

In 1956, people in demanded that soviet troops to be removed as the part of a call for democratic reforms

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

What was feudalism? (define the structure)