Antonio Lopez de Santa Anna

Santa Anna, then a general, issued the Plan of Casa Mata on February 1, 1823, calling for the overthrow of Emperor Agust

Santa Anna commanded Mexican forces that defeated a Spanish invasion force at Tampico on September 11, 1829. The victory ended Spain's last attempt to reconquer Mexico and made Santa Anna a national hero. He was hailed as the 'Hero of Tampico' and used this fame to advance politically.

Santa Anna was elected President of Mexico in 1833. He quickly delegated power to Vice President Valent

Santa Anna personally led the Mexican army in the siege of the Alamo mission in San Antonio, Texas. After a 13-day siege, Mexican forces stormed the fort on March 6, 1836, killing all 180-250 Texan defenders. The battle became a symbol of Texan resistance and a rallying cry for independence.

Santa Anna's army was surprised and routed by Texan forces under Sam Houston at the Battle of San Jacinto on April 21, 1836. Santa Anna was captured the next day. He was forced to sign the Treaties of Velasco, recognizing Texan independence, though Mexico later repudiated them.

Santa Anna returned from exile to command Mexican forces during the Mexican-American War. Despite initial efforts, his army was defeated at the Battle of Cerro Gordo and later at the Battle of Chapultepec. US forces captured Mexico City on September 14, 1847, leading to the Treaty of Guadalupe Hidalgo and massive territorial losses.

During his final presidency, Santa Anna agreed to the Gadsden Purchase, selling 29,670 square miles of territory (La Mesilla) to the United States for $10 million. The sale was widely condemned in Mexico as a betrayal. This act further damaged his reputation and led to his overthrow.

The Plan of Ayutla, led by Juan