Texas revolution By timelinechanger123 Oct 2, 1835 The Battle of Gonzales marks the beginning of the Texas Revolution. Mar 2, 1836 The Texas Declaration of Independence is signed, officially declaring Texas a separate nation. Mar 6, 1836 The Battle of the Alamo ends with the death of all Texan defenders, but inspires others to join the fight for independence. Apr 21, 1836 The Battle of San Jacinto is won by the Texans, resulting in their victory over the Mexican army and the capture of General Santa Anna. Oct 22, 1836 Sam Houston is elected as the first president of the Republic of Texas. Feb 19, 1846 Texas is annexed by the United States and becomes the 28th state of the union.