Charles IV of Luxembourg vs Otto I the Great

Charles, Margrave of Moravia and grandson of Henry VII, was elected King of Germany by a faction of electors opposed to Louis IV. His election was supported by Pope Clement VI, leading to a double kingship.

Charles IV founded the University of Prague (Charles University), the first university in Central Europe. It became a major center of learning and culture, attracting scholars from across Europe.

Charles IV was crowned Holy Roman Emperor in Rome by a papal legate. His coronation was the first by a pope in decades and marked a reconciliation between the empire and papacy.

Charles IV issued the Golden Bull, a constitutional document that regulated the election of the German king by seven prince-electors. It established a fixed electoral college and reduced papal influence, remaining in effect until 1806.

Otto married Adelaide, the widowed queen of Italy, after intervening in Italian politics. This marriage gave him control over the Kingdom of Italy and strengthened his claim to imperial authority.

Otto led a German army to defeat the Magyar (Hungarian) forces at the Lechfeld near Augsburg. This victory ended Magyar raids into Western Europe and secured Otto's reputation as a defender of Christendom.

Pope John XII crowned Otto I as Holy Roman Emperor in Rome, reviving the imperial title in the West. This event established the Holy Roman Empire as a major political entity and linked German kingship with papal authority.