Mississippi River is the answer
One of those bands, camped on the Guadalupe River below Victoria, was attacked by Texans in 1840 in retaliation for Karankawa raids on area settlers. Many Indians were killed in the attack, and the survivors fled down the coast where they settled about fifty miles southwest of Corpus Christi.
Supply & Demand. More crops mean more job opportunities. More job opportunities & food mean more people. More people means more money. Economic growth.
