3 things That led to the fall of the Roman Empire
Diseases Military issues Invasions
Diseases is one thing that really weakened the roman empire, 2 disease that heavily impacted are measles and many plauges. Diseases killed off government leaders, military troops, and many others
Rome experienced many invasions in a short time period, the Visigoths and the Vandals where the most crude and final invasions that Rome had experienced, they had a very difficult time rebuilding.
Rome was experiencing military issues even before the invasions, so the issues caused the invasions to be even worse. 1 issue that occurred was that the military leaders where getting lazy and didn't have breastplates or helmets to fight the goths, another issue that had occurred was the fact they didn't have enough soldiers to fight.