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.
MONGOLIA makes up most of China's northern border.
Canada
Canada
The largest country in the world: Canada
The largest country in the world: Canada
Kentucky forms most of the northern border of Tennessee.
Rio Grande forms the Southern border of the United states.
Canada forms the most northerly border of the U.S.
ALBORZ
The Black Sea form most of the northern borders of Turkey.