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May 14, 2020 · May 14, 2020 • Updated November 29, 2023. Two long years had passed after the initial shots were fired, sparking the Mexican American War in 1846. After United States forces under General Winfield Scott captured and occupied Mexico City in 1848, Mexican President Antonio López de Santa Anna surrendered.
This is a list of the major causes and effects of the Mexican-American War, which grew from a border dispute after the United States annexed Texas in 1845 and resulted in the United States’ acquisition of more than 500,000 square miles (1,300,000 square kilometers) of Mexican territory.
This list presents some of the key facts of the Mexican-American War, from its origins following the United States’ annexation of Texas (1845) to major turning points in the conflict, including the Battle of Buena Vista in February 1847 and the capture of Mexico City by U.S. forces seven months later.
The United States Army won a grand victory. Although suffering 13,000 killed, the military won every engagement of the war. Mexico was stripped of half of its territory and was not consoled by the monetary settlement. The Mexican-American War arose from border disputes between the U.S. and Mexico.
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Despite the general unpopularity of the impending war, Congress approved Polk’s declaration on 13 May 1846. Navy involvement in the Mexican-American War included blockades and operations on...
The Mexican-American War, sparked by Texas annexation and Manifest Destiny, led to the U.S. gaining over a million square miles of territory. This war transformed lives, shifted national boundaries, and stirred political realignment. Despite its significant impact, it's often overshadowed in American memory by other wars.
The Treaty of Guadalupe Hidalgo, which brought an official end to the Mexican-American War (1846-48), was signed on February 2, 1848, at Guadalupe Hidalgo, a city to which the Mexican government had fled with the advance of U.S. forces.
