Want this question answered?
Rio Grande forms the Southern border of the United states.
The Mississippi river forms the western border of the southern colonies.
The gulf that forms part of the southern border of the United States is the Gulf of Mexico
Arkansas
Arkansas
The U.S. southern border is formed by Mexico and the Gulf of Mexico.
A River
The U.S. southern border is formed by Mexico and the Gulf of Mexico.
The U.S. southern border is formed by Mexico and the Gulf of Mexico.
amazon river?
Yes.
Rio grande