What was the biggest challenge in foreign policy facing us presidents in the 1990s? the fall of soviet communism the rise of unilateralism the terrorist attacks on the united states the development of china's military

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there is no chart here so no one can answer this.

i need the diagram.

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.