discontent among German princes. Thus, the Habsburgs were forced to refocus their attention on the West. Frederick III's cousin and predecessor, Albert II (who was Sigismund's son-in-law and heir through his marriage with Elizabeth of Luxembourg) had managed to combine the crowns of Germany, Hungary, Bohemia and Croatia under his rule, but he died young. During his rule, Maximilian had a double focus on both the East and the West. The successful expansion (with the notable role of marriage policy) under Maximilian bolstered his position in the Empire, and also created more pressure for an imperial reform, so that they could get more resources and coordinated help from the German territories to defend their realms and counter hostile powers such as France. Marriage policy under Maximilian As part of the Treaty of Arras, Maximilian betrothed his three-year-old daughter Margaret to the Dauphin of France (later Charles VIII), son of his adversary Louis XI. The betrothal was the result of clandestine negotiations between Louis XI and Ghent – as Maximilian's position was temporarily weakened by his wife's death, he had no say in the matter. Dying shortly after signing the Treaty of Le Verger, Francis II, Duke of Brittany, left his realm to his daughter Anne. In her search of alliances to protect her domain from neighboring interests, she betrothed Maximilian I in 1490. About a year later, they married by proxy. However, Charles VIII and his sister Anne wanted her inheritance for France. So, when the former came of age in 1491, and taking advantage of Maximilian and his father's interest in the succession of their adversary Mathias Corvinus, King of Hungary, Charles repudiated his betrothal to Margaret, invaded Brittany, forced Anne of Brittany to repudiate her unconsummated marriage to Maximilian, and married Anne of Brittany himself. Margaret then remained in France as a hostage of sorts until 1493, when she was finally returned to her father with the signing of the Treaty of Senlis. In the same year, as the hostilities of the lengthy Italian Wars with France were in preparation, Maximilian contracted another marriage for himself, this time to Bianca Maria Sforza, daughter of Galeazzo Maria Sforza, Duke of Milan, with the intercession of his brother, Ludovico Sforza, then regent of the duchy after the former's death. In the East, Maximilian faced the need to reduce the growing pressures on the Empire brought about by treaties between the