If we choose a single theme out of the provided choices, it would be evident to state that the author herself gave this chapter a name- "Influence of Abraham Lincoln". However, In the chapter we see the following things as a major focus of the author:
1. Author's childhood memories and the memories of people she indulged in her life during that period of time.
2. The greatness of Abraham Lincoln noted in multiple lines in this chapter. For example, the following statement, "... Lincoln himself ... an epitome ... all that ... great."