Judging by die lands Napoleon acquired for France, what do you think was his primary goal for his empire ?

He always had the goal to expand the French empire as big as he could. His main goal was to create a vast empire and conquer all Europe.

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.