USA HISTORY

Detailed explanation-1: -The Rio Grande (known in Mexico as the Río Bravo del Norte, or simply Río Bravo) is a river that flows from southwestern Colorado in the United States to the Gulf of Mexico. Along the way it forms part of the Mexico–United States border.

Detailed explanation-2: -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-3: -Mexico said the Nueces River, to the north, should be the border. The dispute simmered until Dec. 29, 1845, when the U.S. annexed the Lone Star State, and sent troops to the Rio Grande a month later.

Detailed explanation-4: -The Mexico–United States border stretches from the Pacific Ocean in the west to the Gulf of Mexico in the east. Border states include the Mexican states of Baja California, Sonora, Chihuahua, Coahuila, Nuevo León, and Tamaulipas. U.S. states along the border are California, Arizona, New Mexico, and Texas.

Detailed explanation-5: -In 1848, the Rio Grande/Rio Bravo was named as the boundary between the United States and Mexico by the Treaty of Guadalupe Hidalgo. For the next hundred years, this border-defining river would meander, flood and retreat; changing maps, and lives, as it moved.