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How did Frederick II use castles and border fortifications in Sicily?
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Frederick II
Frederick II, bust, c. 13th century; in the collection of the Museo Provinciale Campano, Capua, Italy.
To consolidate his rule in the Kingdom of Sicily, Frederick II utilized a strategic network of castles and border fortifications to strengthen his authority and secure his territories.1
These defensive structures were part of a broader program of state-building and centralization. By erecting this chain of fortifications, Frederick aimed to stabilize his kingdom, suppress internal resistance from rebellious barons, and maintain control over his domains against external pressures. This infrastructure complemented his other administrative reforms, such as the establishment of a civil service and the creation of the University of Naples, all of which were designed to enhance the power of the state.1