Instructions from my instructor:
Begin your assignment with a brief, focused intro paragraph. An intro paragraph begins with a thesis. Given an assignment, you already have the thesis: The Mexican Revolution had a great effect (or had no effect; or had only negative effects; or had only positive effect; or had both positive and negative effects) on the relationships between Anglos an Tejanos both during and after the event
Follow the thesis with main points. If, for example, you chose a thesis that said the revolution had both positive and negative effects, you first main point might be, “The Mexican Revolution had many negative effects on the relationships between Anglos and Tejanos.” Then you would add your 2nd main point, “The Mexican Revolution also had many positive effects on the relationships between Anglos and Tejanos.” At this point, your intro paragraph is complete.