Which below do countries not have to think about when deciding what to trading? Absolute advantage

Comparative advantage

Opportunity cost

Trade off

during the ming dynasty

bro where is your chart

information is crucial for making good decisions

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.