The correct answer is, Stephen F. Austin convince the Mexican government to allow slavery making clear to the Mexican government that Americans would not move to Texas without slavery. American settlers differed with Mexico on their view of slavery. Americans supported slavery meanwhile Mexic was against slavery. Mexico banned slavery in 1829,
Stephen F. Austin fond a land to settle Americans in Texas in September 1821, on the western bank of Brazos River, approximately 150 miles east of San Antonio. He convinced the Mexican authorities to let his colony stay and that was why could bring the first Amenican families to Texas.