Philip relied on skilful civil servants, such as Guillaume de Nogaret and Enguerrand de Marigny, to govern the kingdom rather than on his nobles. Philip and his advisors were instrumental in the transformation of France from a feudal country to a centralized state. The king, who sought an uncontested monarchy, compelled his vassals by wars and restricted feudal usages. His ambitions made him highly influential in European affairs. His goal was to place his relatives on foreign thrones. Princes from his house ruled in Naples and Hungary. He tried and failed to make another relative the Holy Roman Emperor. He began the long advance of France eastward by taking control of scattered fiefs.