The Orinoco River forms a 200 mile border between Venezuela and Colombia.
Rio Grande forms the Southern border of the United states.
Panama's only southern land border is with Colombia.Another answerThe southerly border of Venezuela touches Colombia and Brazil.
The Orinoco River forms a 200-mile border between Venezuela and Colombia in South America.
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.
Golf of Mexico
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.