A. 17th Parallel Line
B. 38th Parallel Line
C. 47th Parallel Line
D. 49th Parallel Line
Submitted by: Ali Mallah
The treaty established the 49th parallel from the Rocky Mountains to the Strait of Georgia as the boundary between the United States and British Canada. … In 1818, a U.S.-British agreement had established the border along the 49th parallel from Lake of the Woods in the east to the Rocky Mountains in the west.