We just learned about the King Charlemagne.
Another part of early Christianity is Vikings and Christians and how they lived together.
Sometimes vikings would go do a raid, and attack another group of people.
They would steal food and things, but they would also sometimes steal people.
The people they brought back were either made to be slaves or taken as wives for the vikings.
A lot of the people they took were Christian, so just by doing these raids more and more vikings would get to live around Christians.
Just by being with Christians and living with them, many vikings became Christian, and that helped Christianity grow in countries like Denmark, Sweden and Norway.
(from: wikipedia - vikings)
Kid Facts - Blast from the past: Muratorian Fragment
