The area in dispute between the United States and Great Britain in 1845 lay between?

Question

a. the forty-second parallel and the Columbia River.
b. the Cascade Mountains, the Columbia River, and Puget
Sound.
c. the 36°30’ line to the Columbia River.
d. the forty-ninth parallel and the 54°40’ line.
e. the Columbia River, the forty-ninth parallel, and the Pacific Ocean.

Answer 1

d. the forty-ninth parallel and the 54°40’ line.

http://en.wikipedia.org/wiki/Oregon_boundary_dispute