How is Carnton's misrepresented history, and exploitation of slavery similar to the situation with the Lomax's an Lead Belly?

While the common consensus is that the impact of the Vikings during the Viking Age, which lasted from about 800 AD to 1100 AD, was not very enduring as the Vikings were skilled at assimilating into the local population, the Viking culture has had a lasting impact on the art, technology, society, and trade of every population they encountered.