While Germany had been absorbed in these momentous issues, the war with France had been continued on the borders of the Netherlands, and in Italy, with varying results. In April 1555, Siena was regained for the Imperialists by Cosimo, Duke of Florence. Elsewhere the events were unimportant, and, in 1556, a truce concluded at Vaucelles, led to a brief cessation of arms. By that date, however, Charles had ceased to be King of Spain. | Preparation of Charles for his abdication. Disappointed at the frustration of all his schemes, a victim to gout, asthma, and other ailments, he determined to abandon the heretical Germany to Ferdinand, and to resign the government of his other territories to his son. Charles fondly hoped that Philip, united to the Queen of England, and in the full vigour of youth, might yet establish a great Catholic monarchy with its centre in Spain, and resist the dangerous advance of heresy; nay, might some day bring the King of France to his knees, and establish Spanish supremacy in Europe. Milan and Italy had been already ceded to Philip on his marriage with Mary of England, but the division of authority had led to difficulties, and to some quarrels between father and son. In October 1555, therefore, one month after the peace of Augsburg, Queen Mary of Hungary resigned her post as Regent of the Netherlands, and the government of those territories, which had just been once more separated from the Empire, was handed over to Philip. | Jan. 1556. Philip acknowledged King of Spain. Sept.: | Charles resigns the imperial throne. Even then, Charles had apparently intended to retain the government of Spain somewhat longer in his hands, but Italy and the Netherlands could scarcely be defended without Spanish arms and money; accordingly, in the following January (1556), Philip was acknowledged King of Spain. Finally, in the September of that year, Charles resigned the imperial crown, although, owing to certain technicalities, Ferdinand was not elected for two years. By this act, the ambitious idea, first entertained by Maximilian, of uniting under one rule Spain, Italy, and the Netherlands with the German dominions of the Hapsburgs, was abandoned, and a return was made to the more reasonable policy of Ferdinand the Catholic. Henceforth until the disappearance of the Spanish line in 1700, the House of Hapsburg was divided into two branches, of which the Austrian ruled over the family territories in South Germany, and secured the elective throne of the Empire; while the Spanish ruled over Italy, Franche-Comté, the Netherlands, and the conquests in the New World. It would probably have been well for Spain if she had never had a German Emperor as her King; while the Netherlands, all that now remained to her of the patrimony of the Archduke Philip, was yet to prove a source of weakness and humiliation. | Charles at Yuste. Sept. 1556 to Sept. 1558. | Death of Charles V. 21st Sept. 1558.