268 A BRIEF SURVEY OF HUMAN HISTORY monarchs, the Empire in its original form was at an end. From the point of view of the restoration of order in Europe, which is the only significant viewpoint for us here, the dynastic history of Otto's successors may be very briefly told. The outstanding figures are those of Henry IV (1056- 1106) and Frederick Barbarosa (Red Beard, 1152-1190), though the latter belonged to a different family,—the Hohenstaufen. The reigns of both were marked by the titanic struggle with the Popes. Frederick failed where Henry had at least partially succeeded. The two together indicate the trend of medieval European civilisation. Otto the Great like Charlemagne had received the imperial crown! from the Pope (962). But unlike Charles the Great his relations with the head of the Roman Church were fraught with dire consequences. They reached a climax under Henry IV and continued to trouble Europe for several gene- rations. Briefly put, the German monarchs considered themselves thereafter as Roman Emperors no less (or perhaps even more) than German kings. This made them concen- trate on dominating over Italy instead of maintaining orderly government in their own country. While such a policy resulted in postponing the day of German unification, it also set to Europe one of its toughest problems. Feudal anar- chy throve in Central Europe while the Emperors distracted themselves with futile quarrels with the Popes. The cause of the struggle, though it might appear trivial now, was con- sidered most vital by both parties in those times. In effect it was the question whether the Pope or the Emperor should be regarded as supreme in Christendom. Both were trying to arrogate to themselves the myth of a bygone age, viz. the ideal of Theocracy. There may be little doubt about the secular sovereignty of the Emperor and the spiritual sovereignty of the.