Canada forms the most northerly border of the U.S.
Canada does,
Canada
Canada
Canada
Canada
The country that forms most of the northern border of the United States is Canada. The country directly to the south is Mexico.
The country that forms most of the northern border of the United States is Canada. The country directly to the south is Mexico.
Canada borders the north of the US.
The largest country in the world: Canada
Canada.
Two countries share a border with the United States. To the north, the US shares a border with Canada. To the south, the US shares a border with Mexico.