What is the only state that borders more than two Canadian provinces?
The U.S.-Canada border is the longest international boundary in the world, stretching for 5,525 miles from one coast to the other. Thirteen states lie along the border, but none touches as many Canadian provinces as Montana. The Treasure State has British Columbia, Alberta, and Saskatchewan as its neighbors to the north.
Several other states share a border with two provinces, while Alaska shares the longest border with Canada overall, at 1,538 miles. The border between Canada and the United States was established in 1783 by the Treaty of Paris and was meant to be a relatively straight line along the 49th parallel, although in truth it’s far more zig-zag.
Answer: The correct answer is Montana