USA HISTORY

Detailed explanation-1: -Part of Texas’ creation of The Republic of Texas was establishing new borders with its neighbors. Texas used the Adams-Onís as a boundary line to the U.S., but decided to set the Rio Grande (called the Río Bravo del Norte in Mexico) as its boundary line to Mexico.

Detailed explanation-2: -Mexico also relinquished all claims to Texas, and recognized the Rio Grande as the southern boundary with the United States.

Detailed explanation-3: -Mexico also relinquished all claims to Texas, and recognized the Rio Grande as the southern boundary with the United States.

Detailed explanation-4: -2, 1848, the Treaty of Guadalupe Hidalgo was signed, establishing the Rio Grande (and not the Nueces River) as the U.S.-Mexican border.

Detailed explanation-5: -The treaty set a border between Texas and Mexico, and ceded land that now includes the states of California, Nevada, Utah, New Mexico, most of Arizona and Colorado, and parts of Oklahoma, Kansas, and Wyoming to the United States.