He mentioned something about collegeboard asks three types of questions. What are the three types?
Causation (cause and effect) CCOT (continuity and change over time) and Comparison (similarities and differences)
does that impact how we write our thesis?
Change and continuity over time, comparison or causation. However, the way the exam is written now, there is usually no single way to answer a Free Response Question. One way may lend itself better but you won’t be penalized for talking about cause and effect if another person writes about change and continuity over time.
I think he was referring to the different Historical Thinking Skills:
Cause/Effect, CCOT, or Compare/Contrast