Imperial Troops Sack Rome
In the spring of 1527, Europe was gripped by the Italian War between the Habsburg emperor Charles V and a coalition that included Pope Clement VII. Mutinous imperial troops, largely unpaid German landsknechts and Spanish soldiers, advanced on the lightly defended city after their commander, the Duke of Bourbon, was killed during the assault on the walls. On May 6 the forces breached the defenses, overran the Vatican and other districts, and spent weeks looting palaces, churches, and libraries while killing thousands of residents. Pope Clement escaped to Castel Sant'Angelo but was forced to pay a massive ransom for his release. The destruction scattered artists and scholars, many of whom fled to other Italian cities or northern Europe.
Why it matters: The Sack of Rome shattered the political independence of the Papal States and accelerated the decline of High Renaissance patronage in the city. It exposed the vulnerability of Renaissance Italy to foreign armies and contributed to the spread of Reformation ideas as Protestant soldiers targeted Catholic symbols. The event prompted long-term shifts in European diplomacy and artistic centers.