sentences:  In his absence, a number of events propelled the colonists toward confrontation with Santa Anna's centralist government.Austin took temporary command of the Texian forces during the Siege of Béxar from October 12 to December 11, 1835.After learning of the Disturbances at Anahuac and Velasco in the summer of 1835, an enraged Santa Anna made rapid preparations for the Mexican army to sweep Anglo settlers from Texas.