Topics you should mention from the documents:
Document A: Money going toward universities like UT and Texas A&M
Document B: The relationship of divorce rates in oil towns in Texas
Document C: Impacts on African-Americans and Mexicans during the oil boom
Document D: The benefits of oil in Wink, Texas

Words you can use in your essay:
Spindletop
Wildcatter
Oil rig
Social change
Reform
Legislature
Income
Petroleum