Inspired by the Vikings TV show (not historically accurate of course), where a character named Floki discovers Islam and is fascinated by it during a raid on Algeciras. He appreciates their devotion to Allah and his amazement at it even brings him to question his own pagan beliefs. What if then, through trade or war with the Islamic world, the Vikings or at least a substantial portion of them, adopt Islam as their religion? Would it survive or would they be killed for being heretics? They would certainly be accepting of the idea of "jihad" and holy war, which they could use as a motivation for further raiding and wars.
How could you achieve this to the point where Scandinavia becomes Islamic? Would there be a forcible Christianisation campaign down the line like there was in OTL?
How could you achieve this to the point where Scandinavia becomes Islamic? Would there be a forcible Christianisation campaign down the line like there was in OTL?