ficial to the growth of the cities. Germany grew in civilization although it did not reach the same level of culture which Italy and France had then attained.
Henry V died childless, and his nephew, Duke Frederick of Swabia, the representative of the most powerful ruling family in the empire, hoped to be his successor. The clergy, led by Archbishop Adalbert of Mainz, however, feared that Frederick would continue the ecclesiastical policy of the Franconian emperors, and they succeeded in defeating him as a candidate. At Mainz the majority of the princes voted for Lothair of Supplinburg (1125-37); thus the electors disregarded any hereditary right to the throne. The Hohenstaufen brothers, Frederick and Conrad, did not yield the crown to Lothair without a struggle. The Hohenstaufen family was in possession of the crownlands belonging to the inheritance of the Franconian emperors, and a long struggle ensued over these territories. Lothair's suzerainty was for a while in a very critical position; the Hohenstaufen power increased to such an extent that in 1127 its abettors ventured to proclaim Conrad king. In the end, however, Lothair conquered. A courageous man, but one somewhat inclined to hasty action, he was able to maintain the claims of the empire against Bohemia, Poland, and Denmark. As a statesman, however, Conrad was less aggressive. He allowed the schism of 1130, when Innocent II and Anacletus Il contended for the Holy See, to pass by without turning the temporal weakness of the papacy to the benefit of the empire. After a delay Lothair finally recognized Innocent as pope and brought him to Rome. Here Lothir was crowned emperor in 1133; but the Curia did not agree to his demand for the restoration of the old right of investiture. However, he received the domains of the Countess Matilda as a fief from the pope and thus laid the foundation of the strong position of the house of Welf (Guelph) in Central Europe. In the meantime the two Hohenstaufen brothers were defeated, and Lothair was now able (1136), without fear of an uprising in Germany, to go to Rome for a second time. The object of this further campaign in Italy was to defeat King Roger of Sicily, the protector of the antipope, but the success of the imperial army was only temporary. Differences of opinion as to imperial and papal rights in lower Italy and Sicily endangered at times the good understanding between the two great powers. The emperor grew ill and died on the way home, and after his death the vigorous Roger united all lower Italy, with the exception of Benevento, into a kingdom that held an unrivalled position in Europe for its brilliant and strangely mixed culture. In the struggle between the papacy and the empire this Sicilian kingdom was before long to take an important part.
The political policy of the Church was directed by its distrust of the aims of the Saxon dynasty in lower Italy; consequently by a bold stroke it brought about the election of Conrad III (1138-52), the Hohenstaufen Duke of Franconia, passing over Duke Henry the Proud, ruler of Saxony and Bavaria, and a descendant of Duke Welf (Guelph). The new king demanded from Henry the surrender of the Saxon duchy. Although after a long struggle the double Duchy of Bavaria-Saxony was dissolved, yet the Saxon duchy that was given by the treaty of 1142 to young Henry the Lion, son of Henry the Proud, continued a menace to the Hohenstaufen rule. Conrad was not able to put an end to the disorders in his realm, and the respect felt for the empire on the eastern frontier declined; neither was he able to assert his power in Italy. Yet all these troubles did not prevent his yielding to the fiery eloquence of St. Bernard of Clairvaux and joining the Second Crusade. This crusade, the success of which had been promised by St. Bernard and the pope, failed completely. When Conrad returned home, broken in spirit, he was confronted by the danger of a formidable rising of the Welfs. In 1152 he died. During his reign the intellectual results of the Crusades began to show themselves. Men's imaginations had been stimulated and led them away from traditional medieval sentiment. The world was seized by a romantic impulse and the conception of the Crusades, developed first among the Romanic nations, gave a Romanic colouring to the civilization and morals of the age. For a long time German knighthood, in particular, was characterized by Romanic ideas and manners.
When the new king, Frederick I Barbarossa (1152-90), ascended the throne his German kingdom seemed on the verge of disintegration, and he sought to strengthen his power by a journey through all parts of his realms. Contrary to the policy pursued by his predecessor, he exerted himself to settle the strife between the Welf (Guelph) and Hohenstaufen parties. He wanted to strengthen the Welf power to such extent as to make it evident that this party's interests coincided with those of the Crown. Besides, Saxony, Henry the Lion received also the Duchy of Bavaria which had been taken from his father Henry the Proud. As secular protector of the Church, Frederick came to an agreement with the pope in regard to the latter's adversaries, the citizens of Rome and King Roger of Sicily. The imperial policy of Frederick was one of vast schemes which he could only carry out when he had a firm footing in Italy. But in Italy the city republics had arisen, and these had entirely cast off his suzerainty. Not realizing the power of resistance of the free communities, Frederick wanted to force the cities to recognize the supremacy of the empire. In case the pope should interfere in the dispute, Frederick was resolved not to permit his intervention in secular affairs. Frederick was filled with an ideal conception of his position as emperor. He believed that the Germans were destined in the history of the world to exercise universal rule. It was this idea, however, that exasperated the Italians and aroused their hatred. Frederick could only carry out this universal policy if Italy were his, and the question of its possession led to renewed struggles between Church and State. When Frederick went to Rome to be crowned emperor in 1155, most of the Italian cities paid their homage to him. On his return home Bavaria was restored in fief to Henry the Lion, the East Mark (later Austria) being first detached from the duchy. This led in the course of time to a development of the mark that proved of great importance for the future history of the empire. Frederick's policy was, in the main, not to interfere with the rights of the German princes as long as they obeyed the laws of the empire. The spiritual princes he attached closely to himself. The most powerful bishops of this period, Rainald of Cologne, Christian of Mainz, and Wichmann of Magdeburg, supported the imperial party. The majority of the bishops looked upon Frederick as a protection against the encroachments of Rome and of the secular rulers. The emperor sought, by strengthening his dynastic power, to make himself independent of both the ecclesiastical and temporal princes; to carry out this policy he depended on his inferior civil officials (Ministerialen), who were still serfs, and from whom was hereafter to come the important military nobility. Thus Frederick prepared the way for the flourishing period of chivalry, which was to give its signature to the time now at hand. A romantic, knightly culture arose; poetry flourished; yet the love lyrics of the age often expounded unhealthy views of morals and marriage. Nevertheless, the movement did not penetrate very deep, and the common people remained uncorrupted. Moreover, poetry was not wasted on artificial love songs; Wolfram von Eschenbach had the courage to attempt great problems; Walther von der Vogelweide was the herald of German imperialism. Art undertook to solve great questions, and began to draw
