How did the constitution fix the problems of the articles of confederation? use two of the following principles in a paragraph response: rule of law, checks and balances, separation of powers, republicanism, democracy, or federalism.

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.