Charles I of Spain

Charles I of Spain was elected Holy Roman Emperor as Charles V, succeeding his grandfather Maximilian I. This election united the Spanish kingdoms, the Habsburg domains in Austria and the Low Countries, and the Holy Roman Empire under a single ruler, creating a vast European empire.

Charles V presided over the Diet of Worms, where Martin Luther was summoned to recant his teachings. Luther refused, and Charles V issued the Edict of Worms, declaring Luther an outlaw and banning his writings. This event deepened the religious divide in Europe and sparked the Protestant Reformation.

Charles V's imperial army defeated the French forces of King Francis I at the Battle of Pavia. Francis I was captured and taken prisoner to Spain. The victory solidified Habsburg dominance in Italy and forced France to renounce its claims to Milan and Naples in the Treaty of Madrid.

Imperial troops under Charles V sacked Rome, looting the city and capturing Pope Clement VII. The sack was a brutal event that shocked Europe and led to the temporary dominance of Charles V over the Papacy. It also marked a turning point in the Italian Wars.

Charles V abdicated his thrones, dividing his empire between his son Philip II (who received Spain, the Low Countries, and the Italian possessions) and his brother Ferdinand I (who received the Holy Roman Empire). This abdication was a major event in European politics, reshaping the balance of power.