>>21082220The Viking invasions happened after the initial Christian purge of Europe and German takeover.
The saxons were already in Britain when the Vikings came.
Meaning the Vikings were a later wave of invaders who became Christian pretty quickly afterwards.
The Vikings who settled northern France became the Normans and they were integral to the Crusades.
Other Vikings helped found modern Russia.
Again it may have been a few centuries earlier than what we are told.