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The U.S. finally annex Texas, Mexico doesn't recongnize Texas as an independent country
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U.S. troops defeat Mexico at the Battle of Palo Alto, the first official battle of the war. General Taylor declares victory when Mariano Arista's Mexican troops retreat.
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On May 13, 1846, the U.S. Congress overwhelmingly votes in favor of President James K. Polk’s request to declare war on Mexico in a dispute over Texas.
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General Winfield Scott planned an attack on Mexico city where they invaded the army base of Chapultepec. They took over Mexico and forced a surrender.
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The treaty ended the Mexican-American war and gave the U.S. a lot of Mexican land. It added an additional 525,000 square miles to United States territory, including the including the land that makes up all or parts of present-day Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming. Mexico also gave up all claims to Texas and recognized the Rio Grande as America’s southern boundary.
