The election was important because it was federalist v anti federalist. The events that made it were that there were fights and chaos. There was also a victory for democratic-republicans.
In my opinion, I would think that the first answer is correct because the other answers don't really make any sense.
Hopefully its right.
If Robert McNamara is one of the options, then he is the correct answer - he was important in the Vietnam War, but not during the WWII.