 Complete the following phrase:  In 1834, Mexican conservatives seized the political initiative, and General Antonio López de Santa Anna became the centralist president of Mexico. The conservative-dominated Congress abandoned the federal system, replacing it with a unitary central government that removed power from the states. Leaving politics to those in Mexico City, General Santa Anna led the Mexican army to quash the semi-independence of Texas. He had done that in Coahuila in 1824, Mexico had merged Texas and Coahuila into the enormous state of Coahuila y Tejas. Austin called Texians to arms and they 