The Rio Grande is part of the boundary of the US.
The continental divide.
The Mississippi River.
The Mississippi does.
Mississippi
The Mississippi River is the geographical feature that divides the eastern and western United States.
Rio Grande and Rio gravo
Rio Grande and Rio gravo
Mississippi River
The Mississippi River.
mississipi
Northwest US. Divides Washington state and Oregon state.
The Mississippi is in the US Longest River in the US Basically divides the country into 2 halfs.
The House of Representatives and the Senate
mississippa arkansaw river
Rio grande
Any line of longitude (or of latitude, for that matter), that crosses the United States, will divide it in two.