But this is how they make their way into Europe, into Paris along these rivers plundering and killing and taking the booty. It got so bad that Charles the Bald offered six tons of silver to the Vikings just to stop. So he gave them six tons of silver and then all the other Vikings were like, six tons of silver? That's a lot of silver. Let's go plunder some more. So that didn't work. So Vikings are wreaking havoc during these dark ages for two or three hundred year time period on these Christian communities taking all their great stuff and bringing it back to the Scandinavian countries and that's going to make them expert tradesmen because a silver cross doesn't do you very well unless you trade it for something even better.