But they were also known as traders. What you see here are two of the major centers of power and trade in the ninth century. You have Constantinople, the capital of the Byzantine Empire, and you have Baghdad, the capital of the Abbasid Caliphate. You also see these major waterways in Eastern Europe, in particular the Dnieper and the Volga Rivers. And so you have these significant trade routes going from the Baltic Sea, either via the Dnieper, crossing the Black Sea to Constantinople, or going from the Baltic to the Volga, all the way to the Caspian Sea, and eventually making their way to Baghdad. And this is well documented. There is archeological evidence of Viking jewelry along these routes.