the answer is popular sovereignty. hope this helps :)
Said to be the same type of stimulus to the Texas Revolution that the Stamp Act was to the American Revolution, was initiated by Lucas Alamán y Escalada, Mexican minister of foreign relations, and was designed to stop the flood of immigration from the United States to Texas. The law came as a result of the warning and communications of Manuel de Mier y Terán, who made fourteen recommendations directed toward stimulating counter-colonization of Texas by Mexicans and Europeans, encouraging military occupation, and stimulating coastal trade.
