The troubles and disorders consequent on the breaking up of the great empire of Charlemagne, had had a very injurious effect on morals and religion; and unworthy persons, to whom the temporal possessions of the Popes had by this time become an object of ambition, took advantage of the depressed state of the Church to seize upon the bishopric of Rome either for themselves or for others in whom they had an interest. [Sidenote: Unspirituality caused by temporal power.] Hence the history of the papacy during the next century and a half is full of dreary records of corruption and wickedness. The elevation of John XII. to the papal throne at the age of eighteen (A.D. 955), and his evil life, called forth the interference of the Emperor Otho the Great, who deposed him and elected Leo VIII. (A.D. 963-A.D. 965) in his stead. [Sidenote: Interference of Emperors of the West.] From this time the emperors frequently interfered to check the continual disputes between Popes and anti-Popes, which often ended in the murder of one of the rivals. Silvester II. (Gerbert) (A.D. 999-A.D. 1003), {105} who was made Pope through the influence of Otho III., was prevented by death from carrying out the reforms he meditated, and at length, in A.D. 1046, the Emperor Henry III. was called upon to decide between three claimants to the papal throne. He settled the question by appointing a German, Clement II. (A.D. 1046-A.D. 1047), after the synod of Sutri had put aside the claims of the original disputants. Henry thus took the election of the Popes entirely out of the hands of the Clergy of Rome, with whom it had hitherto nominally rested, and appropriated it to himself. [Sidenote: This interference unjustifiable.] This was an undoubted usurpation on the part of the secular power, though Henry seems to have been in earnest in his endeavours to check the simony which had been so disgracefully prevalent in the papal elections, and to appoint Bishops who might be worthy of their position. [Sidenote: Hildebrand's influence.] [Sidenote: Overthrow of secular interference.] Leo IX. (A.D. 1048-A.D. 1054) and his successor, Victor II. (A.D. 1055-A.D. 1057), aided and influenced by the famous Hildebrand (afterwards Gregory VII.), succeeded in effecting considerable reforms in religion and morals, and were very zealous in discouraging simoniacal appointments to offices in the Church, but a gradual and increasing resistance was growing up against the imperial encroachments, and after the death of Henry, Pope Nicholas II. (A.D. 1059-A.D. 1061) was enabled to obtain a decree that the election of the Popes should, for the future, rest with the Roman Cardinals, subject to the consent of the Roman Clergy and people, and with some vague reference to the emperor's wishes. [Sidenote: Hildebrand Pope.]