Answer:
By the time the Settlers occupied Texas territory, many other states have already established a proper government system to regulate their people along with implementing some of technological advancement from the Industrial Revolution. Texas on the other hand, still considered to be lawless without proper infrastructure in place. This was the reason why they considered this Region as "Primitive".
On top of that, Texas is located close to Mexican territory. During its early formation, this state was under the strong influence of Mexican government who took an interest in controlling the resources in Texas. The Mexican government poured a lot of soldiers and workers in this region in order to achieve that goal.
This stopped after Texas revolution in 1836. Ever since that war, Mexican government's influence within Texas started to diminished and many of them get back to Mexican territory. This was the reason why many see the revolution as one of the Racial Adjustment.
