Which of the following was one of toussaints louvertures most important accomplishment

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.

austria

hugary

yugoslavia

czechoslovakia

answer; i believe the correct answer is (the willamete valley);