The Alamo is a historic site located in San Antonio, Texas, known for the pivotal battle that took place there in 1836 during the Texas Revolution. It became a symbol of resistance and sacrifice when a small group of Texan defenders, including notable figures like James Bowie and Davy Crockett, fought against a much larger Mexican army led by General Santa Anna. The fall of the Alamo galvanized Texan forces and fueled the fight for independence from Mexico, playing a significant role in the events leading up to the Mexican-American War.