USA HISTORY

Detailed explanation-1: -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.

Detailed explanation-2: -The border between the United States and Canada is officially known as the “International Boundary, ” or just the “Canada-U.S. Border” (in French the frontiere Canada-Etats-Unis).

Detailed explanation-3: -On October 20, 1818 a British-American convention clarified the western border between Canada and the United States “as a line from the farthest northwest part of Lake of the Woods to the 49th parallel and thence west to the Rocky Mountains.

Detailed explanation-4: -On June 15, 1846, Britain and the United States sign the Treaty of Oregon establishing the 49th parallel as the primary international boundary in the Pacific Northwest.