USA HISTORY

Detailed explanation-1: -U.S. relations with Mexico are strong and vital, and Mexico remains one of the United States’ closest and most valued partners. The countries share a 2, 000-mile border with 47 active land ports of entry.

Detailed explanation-2: -It stemmed from the annexation of the Republic of Texas by the U.S. in 1845 and from a dispute over whether Texas ended at the Nueces River (the Mexican claim) or the Rio Grande (the U.S. claim).

Detailed explanation-3: -The immediate cause of the Mexican-American War was a disputed boundary between the United States and Texas on the Nueces Strip. Mexico did not recognize Texas as legitimate American territory and Texas admission to the United States antagonized Mexican officials and citizens.

Detailed explanation-4: -The Mexican–American War, also known in the United States as the Mexican War and in Mexico as the Intervención estadounidense en México (United States intervention in Mexico), was an armed conflict between the United States and Mexico from 1846 to 1848.