The only two countries with land borders with the US are Canada to the north and Mexico to the south.
Mexico and Canada
Canada and Mexico.
Canada and Mexico
Canada and Mexico
Canada and Mexico are the two countries that share a land border with the United States.
Mexico and Canada
Canada and Mexico.
No continents. Two countries: Canada and Mexico
Canada in the north and Mexico in the south have land borders with the US.
The US and Russia.
As far as land borders, there are only two: Canada on the north and Mexico on the south.