What is the Mexican-American War

What is the Mexican-American War?: The Mexican War began on April 25th, 1846, and lasted until February 2nd, 1848. The main cause of the war was land, specifically over Texas. The United States wanted Texas and was able to annex it in 1845. However, Mexico still claimed Texas and refused to acknowledge it as a U.S. territory. Under the guise of Manifest Destiny, President James K. Polk sought to expand even more after annexing Texas and thus provoked Mexico into the war. In the end, the U.S. won through the signing of the Treaty of Guadalupe Hidalgo and gained lands now known as Nevada, Utah, New Mexico, and Arizona. 

"The Mexican-American War - Explained in 16 Minutes"