Question

How long did the invasion go on before the Western Empire Fell?

Answer 1

Answer:

Well, the invasion started after the Great Migration in 375 AD, while the Empire fell in 476 AD. Therefore, we can say that it lasted about 100 years.

Explanation:

Roman Empire was in a bad condition, when in 375 nomadic tribes from Central Asia  - Huns started the Great Migration.

Under their pressure, Germanic tribes started the invasion of the Roman Empire.

Rome was sacked in a couple of occasions, but finally fell under the attack of Ostrogoths in 476.