USA HISTORY

Detailed explanation-1: -During the Texas Revolution, a convention of American Texans meets at Washington-on-the-Brazos and declares the independence of Texas from Mexico. The delegates chose David Burnet as provisional president and confirmed Sam Houston as the commander in chief of all Texan forces.

Detailed explanation-2: -Houston was appointed commander in chief of the Texan army and helped negotiate a treaty with the Cherokee living in eastern Texas. Even as Mexican forces besieged the Alamo in March 1836, Houston attended the convention at Washington-on-the-Brazos that voted for Texan independence.

Detailed explanation-3: -In 1821 shortly after gaining its independence from Spain, Mexico seized control of Texas.