Sicily suffered a ferocious outbreak of the Black Death in 1656, followed by a damaging earthquake in the east of the island in 1693. Sicily was frequently attacked by Barbary pirates from North Africa. The subsequent rebuilding created the distinctive architectural style known as Sicilian Baroque. Periods of rule by the house of Savoy (1713–1720) and then the Austrian Habsburgs led to union (1734) with the Bourbon-ruled Kingdom of Naples, under the rule of Don Carlos of Bourbon (later Charles III of Spain).