2009 L'Aquila earthquake collapse of seriously damaged walls or parapets. The aftershocks also caused sustained psychological trauma to small children and elderly who had already been traumatized by the main earthquake of 6 April 2009. Aware of this, the Italian government temporarily relocated thousands of citizens away from the epicentral area. As a result of aftershocks, the dome of the Anime Sante Basilica in L'Aquila, already heavily damaged by the main shock, almost entirely collapsed. Further buildings collapsed in L'Aquila and in neighbouring municipalities. The aftershock was strong enough to be felt in Rome, where it caused an elderly man to die of
Italian city-states town revolts led to the foundation of city-states throughout medieval Europe, such as in Russia (Novgorod Republic, 12th century), in Flanders (Battle of Golden Spurs, 14th century) in Switzerland (the towns of the Old Swiss Confederacy, 14th century), in Germany (the Hanseatic League, 14th–15th century), and in Prussia (Thirteen Years' War, 15th century). Some Italian city-states became great military powers very early on. Venice and Genoa acquired vast naval empires in the Mediterranean and Black Seas, some of which threatened those of the growing Ottoman Empire. During the Fourth Crusade (1204), Venice conquered a quarter of the Byzantine Empire. The