By saying that "“The day of conquest and aggrandizement is gone by" Wilson is saying that it is time for a new world order, in which territorial conquest isn't the norm. Unfortunately he was proved wrong.
Answer:
They still made sure they were safe from people, and after that they most likely moved to a new place.
Explanation: I passed 5th grade
I would say either B or D but I think the better answer would be D.