Yes, the Rio Grande forms part of the US border. So does the St. Lawrence.
The Yukon River crosses the Canada-US border, but does not form part of it.
The Mississippi River was the western border in 1787.
The Rio Grande forms part of the US border with Mexico, while the St. Lawrence River forms part of the border between the US and Canada.
Rio Grande forms some of the border.
Which river did Mexico claim was the border between Texas and Mexico
nothing
Mississippi River
the border is called the Rio grande river!!!
The Rio Grande
The St. Lawrence River.
The Rio Grande river is a part of the border between the US and Mexico.
The Rio Grande river is part of such border.