Answer:
In conclusion, the Roman empire fell for many reasons, but the 5 main ones were invasions by Barbarian tribes, Economic troubles, and overreliance on slave labor, Overexpansion and Military Spending, and Government corruption and political instability
The most straightforward theory for Western Rome's collapse pins the fall on a string of military losses sustained against outside forces. Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire's borders.
Barbarian kingdoms had established their own power in much of the area of the Western Empire. In 476, the Germanic barbarian king Odoacer deposed the last emperor of the Western Roman Empire in Italy, Romulus Augustulus, and the Senate sent the imperial insignia to the Eastern Roman Emperor Flavius Zeno.
External military threats were a major cause of Rome's fall, and its effects spread across the empire. ... They kept the pressure on the Roman Empire, while nations such as Russia became powerful and sophisticated. What had been barbarian villages in Germany soon turned into 2,300 walled towns and cities.
