Answer:
They contributed to the state's rapid growth in population
Explanation:
In the Nineteenth Century, particularly towards the latter part of the century, migration and immigration shape Texas in a certain way. The most obvious way is the fact that "They contributed to the state's rapid growth in population."
This was evident in the fact that the population of Texas grew rapidly from about 1.6 million in 1880 and eventually reached a little above 3 million people in 1900