The correct answer is:
To plot memorial events or experiences.
A personal experience timeline is a plot of memorial events and experiences that are used to help a writer generate a topic.
A writer could want to use an event that has caused him emotion or curiosity in the past, to generate a topic. In that case, a personal experience timeline is a tool that allows to organize the writer's past experience and discover forgotten memories.
Part 1) The Civil War.
Part 2) he was a natural original secessionist meaning he was from one the states that withdrew from the union, and devoted to the “southern cause” and that they thought that the cause of the confederate states during the American Civil War were heroic, and not centered around slavery.