Which of these events happened from first (top) to last (bottom)

Question

Huns attack the empire and drive german people ahead of them.
Odacer topples Romulus Augustus.
Imperial Crisis leads to civil war.
Roman forces withdraw from Britain as Goths attack Rome.

Answer 1

1. Roman forces withdraw from Britain as Goths attack Rome.
2. Imperial Crisis leads to civil war.
3. Huns attack the empire and drive German people ahead of them.
4. Odoacer topples Romulus Augustus.