Mexican-American War

The Mexican-American War (1846 to 1848) was a pivotal conflict between the United States and Mexico, driven by disputes over the annexation of Texas and contested borderlands. The campaign unfolded across a vast and varied landscape, with major military operations taking place in Texas, New Mexico, California, and deep into the heart of Mexico. U.S. forces secured key victories at battles like Palo Alto, Buena Vista, and the siege of Veracruz. The war culminated in the capture of Mexico City in 1847, forcing Mexico to negotiate peace. The resulting Treaty of Guadalupe Hidalgo in 1848 ended the conflict and ceded a large portion of northern Mexican territory to the United States, reshaping the map of North America.