The treaty which was signed by Spain and Portugal dividing the world into spheres of influence. Mayflower Compact
House of Burgasses
The Great Treaty
Treaty of Tordesillas

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.

not sure might be he acquired the entire oregon territory from great britain

d.

the northwest territory became the most densely populated area in the u.s.