Answer:
Rome fell for a few prime reasons. The first was governmental corruption. Politicians were accepting bribes and acting for their own benefit. When one emperor died, there was an uneasy change of power and no way to fairly choose a new ruler (many Romans disagreed with an inherited monarchy). The empire had become very large and due to communication issues, was poorly managed. This also allowed for barbaric tribes (Visigoths, Ostrogoths, Huns, Moors, Vandals, etc) to invade, or, settle within Roman borders and fight in the armies, secretly planning to do more harm than good. There were also economic problems, such as high taxes and skyrocketing expenses. Lastly, there was a general decline of pride in Rome and Roman citizenship. This in part led to a high crime rate, which only made matters worse.