After Ferdinand's death in 1516, Cisneros served as regent again for a brief time more, and then Charles I was crowned king now that he was of age. However, the young king was at the time almost completely controlled by Flemish advisors such as William de Croÿ, sieur de Chièvres, and he did not undertake any efforts to change the Council at first. Additionally, Charles' new government levied high taxes and demands on Castile, with its ambitions over all Europe. Charles was the King, becoming Charles V Holy Roman Emperor in 1519, of one of the largest empires, the Spanish Empire, in European and world history - "The empire on which the sun never sets." The Bishop of Badajoz, Ruiz de la Mota, was an influential member of the Royal Council and declared to the "Cortes" of Corunna that Castile was to be the empire's "treasury and sword."