On Christmas Day in year 800, Charlemagne was proclaimed Holy Roman Emperor by pope Leo III in Saint Peter´s Church in Rome.
Fourteen years later Charlemagne died and his son Louis the Pious succeeded him. Louis´ reign there were several power struggles and the empire began to break out.
After his death there was fighting between his sons . At the end they reached and agreement known as the Treaty of Verdun in 843 and the empire was divided:
- Charles the Bald received the Western zone.
- Lothair received the middle zone.
- Louis the German got the Eastern zone