The Texas Revolution or Texas War of Independence is fought from October 2, 1835 to April 21, 1836 between Mexico and the Texas (Tejas) portion of the Mexican state of Coahuila y Tejas.Animosity between the Mexican government and the American settlers in Texas (who are called Texians) had begun with the Siete Leyes of 1835, when Mexican President and General Antonio López de Santa Anna Pérez de Lebrón abolished the Constitution of 1824 and proclaimed a new anti-federalist constitution in its place.

Unrest soon followed throughout all of Mexico, and war begins in Texas on October 1, 1835, with the Battle of Gonzales.

Early Texian successes at La Bahia and San Antonio are soon met with crushing defeat at the same locations a few months later.

Soon after, a Texian fort is overrun, and all save a few of the defenders are killed in the Battle of the Alamo.The war ends at the Battle of San Jacinto (about 20 miles (32 km) east of modern day downtown Houston) where General Sam Houston leads the Texas Army to victory in 18 minutes over a portion of the Mexican Army under Santa Anna, who is captured shortly after the battle.

The conclusion of the war results in the creation of the Republic of Texas.

The Republic is never recognized by the government of Mexico, and during its brief existence, it teeters between collapse and invasion from Mexico.

Texas is annexed by the United States of America in 1845, and it is not until the Mexican-American War that the "Texan Question" will be resolved.