The Battle of the Alamo (February 23 – March 6, 1836) was a pivotal event in the Texas Revolution. Following a 13-day siege, Mexican troops under President General Antonio López de Santa Anna reclaimed the Alamo Mission near San Antonio de Béxar (modern-day San Antonio, Texas, United States), killing most of the occupants inside. Santa Anna's refusal to take prisoners during the battle inspired many Texian immigrants and Tejanos to join the Texian Army. Motivated by a desire for revenge, the Texians defeated the Mexican Army at the Battle of San Jacinto, on April 21, 1836, ending the conquering of the Mexican state of Tejas by the newly formed Republic of Texas, the constitution of which enshrined slavery as a right.

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