Which of the following is not a reason for the fall of the roman empire?

Would help if there was answer choices

cultural achievements of the 1920's 2010  

1. cultural achievements and african american achievements in the 1920’s  

2. art and literature charles lindberg flew from ny to paris, france. became national hero; first transatlantic flight.  

3. greenwich village (new york) and the south side (chicago)  many artists, writers, and intellectuals flocked to these areas to share ideas  people lead bohemian, or artistic and unconventional, lifestyles

number   5 i know this because savannah was the first capital and i took the test and all you have to do is look up a map of georgia savannah.