Answer:
In the 5th century, they invaded the declining Roman Empire and they gradually carved it up the between them. 'The barbarians' never intended to destroy the Roman Empire, they wanted to share in its wealth but it was declining anyway and soon broke down altogether.
(Brainliest is appreciated :)
Massive retaliation, also known as a massive response or massive deterrence, is a military doctrine and nuclear strategy in which a state commits itself to retaliate in much greater force in the event of an attack.
I'm not sure but extract is a synonym of abstract