MONGOLIA makes up most of China's northern border.
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.
The largest country in the world: Canada
Canada
Canada
Canada
The atlas mountains form the northern border of?
The largest country in the world: Canada
The Black Sea form most of the northern borders of Turkey.
Rio Grande forms the Southern border of the United states.
The mountains on the northern border of Italy are known as the Alps. They make a natural boundary between Switzerland and Italy.