Rome was utterly destroyed.
Idiotic statement.
And by the people who were under it's empire. Rome's cities, towns and villages were pillaged, the women raped and many of the men killed.
Some cities were destroyed, some men were killed, some women were raped, and not only after the fall of Rome. That is the natural historical process, dude. History of mankind is a history of wars, destructions and reconstructions.
The newly liberated European countries were scratching in the dirt until the "Renaissance".
Another idiotic statement, what "new liberated countries" are you talking about?
In North Europe there were Kingdoms, and Romans never colonized North Europe.
The Vikings were better sailors, than Romans, they created colonies even in North America.
Germanic tribes were superior in their military skills, and that is why they could beat the Romans.
So there was just a normal competition between European people.
Romans conquered the Greeks and adopted their culture, Germanic tribes conquered the Romans and adopted their culture, like the Franks who became French.
But Germanic warlords did not reject the Roman culture, they called their Empire "
Sacrum Imperium Romanum".
Rome remained a magnificent city, and East-Rome, speak Constantinople, too.
Educate yourself, dude!