The stated reason was the Mexican attack called the Thornton Affair but it was also the border conflict between Texas and Mexico as well as Mexico's refusal to sell their states of Nuevo Mexico and...
In the contested Nueces Strip where a US Cavalry patrol stumbled into a Mexican Army encampment. Shots were fired and men died. It is known as the Thornton Affair and it became the casus belli for...
There was a clash between US and Mexican forces patrolling the border, shots were fired and men died. It was called the Thornton Affair and Congress declared War.
After the US annexation of Mexico President Polk ordered the US Army to defend Texas at the Rio Grande border. A clash between US Forces and the Mexican Army became highly likely in the Neuces Strip...