For 10 points, name this location of Syracuse and Palermo, the largest island in the Mediterranean.
The youngest son of Tancred de Hauteville ruled as Count of this region, and his nephew Bohemund was a leader of the First Crusade. One city in this island used a giant mirror to burn Roman ships attacking it, and was ruled by Agathocles as well as Hiero I. The disinformation campaign Operation Mincemeat preceded an Allied invasion of this island that was codenamed Operation Husky. Alcibiades urged for a disastrous Athenian invasion of this island, whose local population massacred Charles of Anjou's officials in an event known as this island's namesake vespers. For 10 points, name this location of Syracuse and Palermo, the largest island in the Mediterranean.
The youngest son of Tancred de Hauteville ruled as Count of this region, and his nephew Bohemund was a leader of the First Crusade.
Sicily [or Sicilia]