Whose power increased after the fall of the Roman Empire? Islam Jews Catholic Church pagans

The power that increased after the fall of the Roman Empire is from the barbarians. They have always wanted to conquer Rome so when the fall of Roman Empire came, then they took this opportunity and led all the citizens in this place with their great power.

The barbarians because they have been wanting to invade Rome and when it fell, the invading barbarians had established their own power in most of the area of the Western Empire.