Answer:
Invasions by the Barbarian tribes
Over expansion and military overspending
The rise of the Eastern Empire
Explanation:
Rome had tangled with Germanic tribes for centuries, but by the 300s “barbarian” groups like the Goths had encroached beyond the Empire’s borders.
Emperor Diocletian divided the Empire into two halves—the Western Empire seated in the city of Milan, and the Eastern Empire in Byzantium, later known as Constantinople. The division made the empire more easily governable in the short term, but over time the two halves drifted apart.
