Upon this divided world of Christendom rained the blows of three sets of antagonists. About the Baltic and North Seas remained a series of Nordic tribes who were only very slowly and reluctantly Christianized; these were the Northmen. They had taken to the sea and piracy, and were raiding all the Christian coasts down to Spain. They had pushed up the Russian rivers to the desolate central lands and brought their shipping over into the south-flowing rivers. They had come out upon the Caspian and Black Seas as pirates also. They set up principalities in Russia; they were the first people to be called Russians. These Northmen Russians came near to taking Constantinople. England in the early ninth century was a Christianized Low German country under a king, Egbert, a protégé and pupil of Charlemagne. The Northmen wrested half the kingdom from his successor Alfred the Great (886), and finally under Canute (1016) made themselves masters of the whole land. Under Rolph the Ganger (912) another band of Northmen conquered the north of France, which became Normandy. Canute ruled not only over England but over Norway and Denmark, but his brief empire fell to pieces at his death through that political weakness of the barbaric peoples—division among a ruler’s sons. It is interesting to speculate what might have happened if this temporary union of the Northmen had endured. They were a race of astonishing boldness and energy. They sailed in their galleys even to Iceland and Greenland. They were the first Europeans to land on American soil. Later on Norman adventurers were to recover Sicily from the Saracens and sack Rome. It is a fascinating thing to imagine what a great northern sea-faring power might have grown out of Canute’s kingdom, reaching from America to Russia. To the east of the Germans and Latinized Europeans was a medley of Slav tribes and Turkish peoples. Prominent among these were the Magyars or Hungarians who were coming westward throughout the eighth and ninth centuries. Charlemagne held them for a time, but after his death they established themselves in what is now Hungary; and after the fashion of their kindred predecessors, the Huns, raided every summer into the settled parts of Europe. In 938 they went through Germany into France, crossed the Alps into North Italy, and so came home, burning, robbing and destroying. Finally pounding away from the south at the vestiges of the Roman Empire were the Saracens. They had made themselves largely masters of the sea; their only formidable adversaries upon the water were the Northmen, the Russian Northmen out of the Black Sea and the Northmen of the west. Map: Europe at the death of Charlemagne—814