Answer:
The three main problems that caused Rome to fall were invasions by barbarians, an unstable government, and pure laziness and negligence. Though Rome was a great empire that conquered countless territories, it was not immune to the numerous attacks from barbarians such as the Huns, the Visigoths, the Vandals, and others.
The barbarians would raid and sack the capital and other cities in ancient Rome, leaving them without money or tradable items. The Vandals did so much damage to the cities that their name is associated with the crime of extensive damage to property. The Huns were another destructive group of barbarians that were led by Attila. They raided Rome in 451 AD, leaving an immense trail of destruction. Other barbarians attacked Rome at different times, each leaving Rome weaker and helpless. Each attack destroyed their economy and left them desperate for a solution. The Ostrogoths finally caused the Western Empire to fall when Odoacer chased Romulus Augustus, the last of the Roman emperors, off the