The Country that shares the southern Border with the US is 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.
CanadaCanada shares the longest border with the US.
mexico and do
The US
Canada does
The only Latin American country that shares a border with the United States is Mexico.
Both Canada and Mexico border the US.
Both the US state and the country border each other.
Mexico
Alaska, as it shares a border with Canada that extends for about 1,538 miles.
Too many to name them all, twelve in the US north and four in the south.