How can you demonstrate the differences in their perspectives about Texas and its independence with historical facts

On march 2nd, 1836, with the Alamo under siege delegates from across Texas met some people in Texas and declared for their independence. Texas has been remaining strong ever since then. During the time they had asked for their independence Texas could have been a bigger place they had tried to expand south and west of into what was then Mexico, but because of the slavery and everything else that was happening it just was not able to happen.