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[Godscreated]

Could it be that you do not know they came much later and by that time the Roman Empire was a somewhat Christian empire?

GC

What the hell are you talking about? They? Who are 'they'? Barbaros was in use in multiple Greek sources long before the Roman Empire existed. Though at first is was more or less a neutral descriptive term signifying little more than non-Greek, it became a pejorative after the Greek/Persian wars.

In any case, I guess I have my answer to my question.

The barbarians destroyed the empire after the empire had become somewhat Christian.

GC