Most of this 3,141 Kilometers (1,952 miles) border is defined by the course of the Rio Grande River (Rio Bravo del Norte, as it is known in Mexico) which runs from Ciudad Juarez-El Paso into the Gulf of Mexico, close to the cities of Matamoros-Brownsville.
The Rio Grande river is the river that is on the western border of Texas.
The western border of Texas is formed primarily by the Rio Grande River. It separates Texas from Mexico.
ricardo suck.
The Mississippi River forms Tennessee's western border.
The river that forms the western border of Illinois is the Mississippi River.
the northeast border of Texas is the red river
The Rio Grande, the Red River and the Sabrine apparently :)
The Mississippi River forms the western border of Illinois.
Mississippi River
The Mississippi River was the western border in 1787.
The western border of Moldova is formed by the Prut river.
The Mississippi River forms the western border of Illinois.