Rio Grande
The Rio Grande. Also the Rio Grande goes into New Mexico a little bit. but it is still the boundary between USA and Mexico.
Mississippi
Rio Grande
The Rio Grande.
The Rio Grande
the Rio grande river
The Colorado River
Rio grande
Rio Grande.
Missouri River BasinThe Missouri River starts in Montana and flows through North and South Dakota, forms the boundary between Nebraska and Iowa and part of the boundary between Kansas and Missouri, and flows through Missouri to the Mississippi River.
The Colorado river
The Rio Grande River