North Dakota.
Canada borders Montana. The provinces of British Columbia, Alberta, and Saskatchewan are adjacent to the northern border of Montana.
Montana if you are in wyoming or southern or central Idaho Canada if you are in Canada or the dakotas or northern Idaho
Montana shares a 545-mile (877 km) border with three Canadian provinces. British Columbia, Alberta, and Saskatchewan. To the east, the state borders North Dakota and South Dakota. To the south lies...