Agreements made at the Yalta and Potsdam conferences near the end of World War Il resulted in the

an economic reason that the south needed a reconstruction plan is that plantations, factories, and other businesses were destroyed during the war.

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.