The Vikings thought of themselves as the ultimate warriors. But this one-dimensional image belies considerable complexity. They were, in fact, as much merchants as marauders. Among the commodities they sold was one that brought them the greatest profit of all - more than amber, silver, or pelts. That commodity was human beings. Few people know that during their days of dominance, the Vikings were slavers to the world. Here, in this essay, is that little-told aspect of their story.
