Several months passed and no further steps were taken by Rome to meet the crisis. This delay was due in great measure to the death of Maximilian I. (1519), and to the sharp contest that ensued. The two strongest candidates were Charles I., King of Spain, who as son of Philip the Handsome (son of Maximilian), and of Joanna of Castile (daughter of Ferdinand and Isabella), was ruler of Spain, the Netherlands, Austria, and Naples, and Francis I., King of France. For centuries the Pope had striven to prevent the union of Naples and the Empire, and with good reason, for such a union must prove almost of necessity highly detrimental to the safety of the Papal States and the independence of the Holy See. For this reason, if for no other, Leo X. did not favour the candidature of Charles. Nor could he induce himself to display any enthusiasm for the cause of Francis I., whose intervention in Italian affairs the Pope had good grounds to dread. As against the two the Pope endeavoured to induce the princes to elect one of their own number, preferably the Elector of Saxony. But the Elector showed no anxiety to accept such a responsible office, and in the end Charles succeeded in winning over to his side the majority of the princes. He was elected and proclaimed Emperor under the title of Charles V. (1519). While Rome remained inactive, and while the opponents of Luther in Germany were handicapped by the crude diplomacy of Miltitz, Luther was gaining ground with marvellous rapidity. His success was due partly to his own great personal gifts as a popular demagogue, and partly also to the fact that no man knew better than he how to make capital out of the ecclesiastical abuses of the time, and to win to his side all who had any reason to be discontented with the existing order. He was strengthened very much by the inactivity of the German bishops, who seemed unwilling to take any severe measures against him, by the help and encouragement of Frederick of Saxony, who, during the interregnum and for some time after the election of Charles V. was the real administrator of Germany, by his union with the leading Humanist scholars and professors, especially Erasmus, all of whom regarded Luther merely as the champion of liberty against the obscurantism of the Scholastics, and by his secret alliances with discontented nobles, such as Ulrich von Hutten and Franz von Sickingen, whose sole hope of improving their fortunes lay in the creation of public disorder.