That is quite a declaration and one that will not, in my opinion, stand up to a review of history. I have to leave to go run errands but just remembering my Florida history suggests this has happened here with Spaniard Catholics "converting" the natives and Hugenots (French) by sword and then killing them anyway. Believe it occurred in vicinity of St Augustine. Technically, they did not spread their religion as they slaughtered their newest adherents but convert by blade, yes they did. I think most all religions have done it. Muslim vs Hindu, Hindu vs Muslim, Protestant vs Catholic, etc, etc. I could be wrong on some of this but Islam did not invent the technique.