Sicily
Italy became a Republic in 1946 and, as part of the Constitution of Italy, Sicily was one of the five regions given special status as an autonomous region. Both the partial Italian land reform and special funding from the Italian government's "Cassa per il Mezzogiorno" (Fund for the South) from 1950 to 1984 helped the Sicilian economy. During this period, the economic and social condition of the island was generally improved thanks to important investments on infrastructures such as motorways and airports, and thanks to the creation of important industrial and commercial areas. In the 1980s, the Mafia was deeply weakened by a second important campaign led by magistrates Giovanni Falcone and Paolo Borsellino. Between 1990 and 2005, the unemployment rate fell from about 23% to 11%.
Kingdom of Sicily
Opposition to French officialdom and taxation combined with incitement of rebellion by agents from the Crown of Aragon and the Byzantine Empire led to the successful insurrection of the Sicilian Vespers followed by the invitation and intervention by king Peter III of Aragon in 1282. The resulting War of the Sicilian Vespers lasted until the Peace of Caltabellotta in 1302, dividing the old Kingdom of Sicily in two. The island of Sicily, called the "Kingdom of Sicily beyond the Lighthouse" or the Kingdom of Trinacria, went to Frederick III of the house of Aragon, who had been ruling it. The peninsular territories (the Mezzogiorno), contemporaneously called Kingdom of Sicily but called Kingdom of Naples by modern scholarship, went to Charles II of the house of Anjou, who had likewise been ruling it. Thus, the peace was formal recognition of an uneasy "status quo". The division in the kingdom became permanent in 1372, with the Treaty of Villeneuve. Though the king of Spain was able to seize both crowns in the 16th century, the administrations of the two halves of the Kingdom of Sicily remained separated until 1816, when they were reunited in the Kingdom of Two Sicilies.