Question

the ____ serves as a border between the northeastern united states and canada. a. mackenzie river b. mississippi river c. st. lawrence river d. rio grande please select the best answer from the choices provided.

Explanation:

The St. Lawrence River forms part of the border between the northeastern United States and Canada. The Mackenzie River is in northern Canada, the Mississippi River is within the United States, and the Rio Grande forms part of the border between the United States and Mexico.

Answer:

C. St. Lawrence River