The Murray river
Canada forms the most northerly border of the U.S.
The Mississippi River forms most of Arkansas's eastern 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 Connecticut River forms most of the border between Vermont and New Hampshire. It acts as a natural border between the two states.
Rio Grande forms the Southern border of the United states.
MONGOLIA makes up most of China's northern border.
Canada
Canada
kentucky
Canada
Canada