Spain wanted people to move to texas so they offered huge tracts of land to impresarios that would bring in settlers like american moses saw this as a great idea.
Texas moved to mexico
.Texas didn't want to follow the rules of being a mexican citizen and being catholic. The entire world was pretty much coming in and in greater numbers so in 1830 the mexican government officially shut down all immigration.
The texans would defeat the mexicans in capture Santa Ana who would sign the treaty on may 14th 1836 that recognized