Question

using the map above, what makes up much of the northern border of the northwest territory?
○ lak
○ rivers
○ u.s. states
○ spanish territory

Explanation:

The Northwest Territory (historical U.S. territory) had its northern border defined largely by the Great Lakes, which are large inland lakes. The other options are incorrect: its southern border was adjacent to U.S. states, rivers formed some other borders, and Spanish territory was to the southwest, not the north.

Answer:

Lakes