Which industry did most new texans work in after the civil war? a. agriculture b. coal mining c. fishing d. oil production

I believe the answer is A. agriculture
Especially Cotton. Many believed due to the diminishing slave labor, cotton production in Texas would suffered after the civil war.
But the cotton industry in texas  produce around 10 times of its initial market value due to the development of railroad as distribution system.

The muslims ruler the mandated and cultural toleration was osman