The reason he is on Mt. Rushmore is because he played a very important role in the evolution of the U.S.A.
In 1846, the Oregon boundary dispute between the U.S. and Britain was settled with the signing of the Oregon Treaty. The British gained sole possession of the land north of the 49th parallel and all of Vancouver Island, with the United States receiving the territory south of that line.
Answer:
C
I've read or seen something like this before
Explanation:
The answer is the constitution because they wanted to establish a better government.
I heard her got that sloppy tappy yuh he thotty