Answer:
The invasion of the barbarians is an important cause of the fall of the Roman Empire because it destroyed the cities and caused people to flee in search of protection, ending trade and economic stability. The historical document supports this argument.
Step-by-step explanation:
One of the main reasons for the fall of the Roman empire was the barbarian invasions, which can be observed in many developed historical documents, or found by scholars of the Roman iumperio who found evidence of the problems caused by the barbarians to the Romans.
The barbarians were, for the most part, northern peoples and their invasions used to be violent, looting houses, abusing women, children and the elderly, stealing goods and killing many people. The land that the barbarians caused caused the Romans to flee the city and take shelter in the countryside. This destroyed the Roman economy and caused it to collapse.