49th parallel

The 49th parallel is a significant line of latitude that acts as part of the border between the United States and Canada. It runs horizontally across North America at about 49 degrees north of the Equator. Established through treaties and negotiations in the 19th century, this boundary helps define the northern part of the U.S.-Canada border, mostly formalized in the Oregon Treaty of 1846. The parallel's significance lies in its role as a geographical boundary, contributing to the peaceful division of the two countries and shaping historical and political relationships in the region.