The correct answer to this open question is the following.
A historian using the historical thinking skill of examining historiography might want to understand the way human learning and understanding has changed over time, in different circumstances, and periods. The historian also wants to understand the circumstances that created a determined event or conflict and what were the results. This means he wants to know the cause and effect of things through history. If he sets the information in chronological order and see what has happen in different times and places, he/she surely will have the correct picture to understand an explain history.