USA HISTORY

Detailed explanation-1: -The Rio Grande is the fifth longest river in the United States and among the top twenty in the world. It extends from the San Juan Mountains of Colorado to the Gulf of Mexico (1, 901 miles) and forms a 1, 255 mile segment of the border between the United States and Mexico.

Detailed explanation-2: -Since 1848, the Rio Grande has marked the boundary between Mexico and the United States from the twin cities of El Paso, Texas, and Ciudad Juárez, Chihuahua, to the Gulf of Mexico. As such, crossing the river was the escape route used by some Texan slaves to seek freedom.

Detailed explanation-3: -Rio Grande, Spanish Río Grande del Norte, or (in Mexico) Río Bravo, or Río Bravo del Norte, fifth longest river of North America, and the 20th longest in the world, forming the border between the U.S. state of Texas and Mexico.

Detailed explanation-4: -The Civil War on the Rio Grande, 1846–1876 makes a groundbreaking contribution not only to the history of a Texas region in transition but also to the larger history of a nation at war with itself.