Very peaceful when you convienently ignore all the violence.
Northern crusades were extremely bloody and defeated people would accept baptism or be executed.
Charlemange was more of the same deal.
Catholic church left pagans to their own devices?
Christian history is littered with these examples, it has not been a peaceful religion since it merged with Roman society. The only real good examples you could have are missionaries and top down conversion as kings and such voluntarily switched religions.
Northern crusades were extremely bloody and defeated people would accept baptism or be executed.
Charlemange was more of the same deal.
Catholic church left pagans to their own devices?
Christian history is littered with these examples, it has not been a peaceful religion since it merged with Roman society. The only real good examples you could have are missionaries and top down conversion as kings and such voluntarily switched religions.