This excerpt is mainly talking about how other powers want to be dominant- and the only way to do that is to rise over everyone else. Kennedy is saying that we will be in charge of ourselves and that we do not intend on having an authoritative power attempting to vanquish us.
In conclusion, your final answer should be B.
What is it that you would like me to answer?
Okay so the time is around 1920 and it is a neighborhood but they didn't specify the exact location. And the exposition is when Mrs.Liz dies. Jemmie and her family moved to a new city. Jemmie moved next to Cass.
Love conquers all is a very common theme