Most Powerful

• #1 Charlemagne
  Frankish Empire Imperial SovereigntyMilitaryPolitical Medieval Military CommandState Power Power: 100
  Charlemagne (c. 747–814) was the Frankish king who turned a powerful regional monarchy into the dominant empire of Latin western Europe. By conquering the Lombards, subduing the Saxons, expanding into central Europe, and accepting imperial coronation in Rome in 800, he created a political order that later generations treated as the starting point for medieval empire in the West. His rule joined war, religion, land distribution, and administration into a single structure, and for that reason his career remains one of the clearest examples of imperial sovereignty built through personal leadership rather than abstract bureaucracy.Charlemagne matters in a study of wealth and power because his empire rested on the control of people, land, tribute, church institutions, and armed followings. He ruled by moving armies, redistributing property, legislating through capitularies, appointing counts and envoys, and binding the church to royal government. The resulting system was expansive and formidable, but it was also costly and coercive. His reign illustrates how medieval empire could be assembled from conquest, ritual legitimacy, and the constant circulation of gifts, offices, and obligations.
• #2 Pope Leo III
  Frankish EmpireRome PoliticalReligionReligious Hierarchy Medieval Religious HierarchyState Power Power: 100
  Pope Leo III (c. 750–816) led the Roman Church from 795 to 816 in an era when the papacy’s security depended on alliances as much as on theology. A Roman cleric shaped by the administrative culture of the Lateran, Leo inherited the political settlement created by his predecessor Adrian I with the Frankish king Charlemagne, while facing sharp resistance from aristocratic factions inside Rome.In 799 Leo was attacked and briefly deposed by opponents who accused him of misconduct and sought to replace him with a more pliable pontiff. He escaped to Charlemagne’s protection, returned to Rome with Frankish backing, and in December 800 placed an imperial crown on Charlemagne’s head in St. Peter’s Basilica. That act linked papal ritual authority to a renewed Western imperial title and became a turning point in medieval political imagination. Leo’s pontificate combined estate administration, diplomatic correspondence, and ceremonial claims of legitimacy to stabilize Rome and the Papal States amid internal factional violence and external pressure.Beyond the coronation, Leo maintained a papal court that mediated disputes, confirmed bishops, and negotiated with regional rulers over boundaries, tribute, and the treatment of church property. His reign shows the papacy operating as a governing institution with archives, finances, and personnel systems that needed continual maintenance.