USA HISTORY

Detailed explanation-1: -The Mexican-American War was a conflict between the United States and Mexico, fought from April 1846 to February 1848.

Detailed explanation-2: -On January 13, 1846, Polk ordered American forces into deeply disputed territory. In April, an army of approximately 4, 000 men lead by General Zachary Taylor entered the Nueces Strip, a contested territory that Mexico and many Americans regarded as never having been a part of Texas.

Detailed explanation-3: -The enormous territory included present-day California, Nevada, Utah, and parts of Arizona, New Mexico, Oklahoma, Colorado and Wyoming.