Which statement accurately describes the Vikings? A. Vikings owed allegiance to one powerful king who ruled from Oslo. B. Viking monks, known as berserkers, helped spread Christianity throughout Europe. C. Viking culture originated on the islands of Greenland and Iceland in the 700s. D. Vikings conducted raids and trading expeditions from the Irish coast to the Caspian Sea.
"D. Vikings conducted raids and trading expeditions from the Irish coast to the Caspian Sea" is the best option from the list because this was their main source of revenue.
