There are a number of theories about the rise of the Sicilian mafia in the 19th century.

They include a push back to the inclusion of Sicily in the new unified Italy or a legacy of years of neglect by the numerous occupying forces of the island.

Most recently however, researchers have discovered a strong link between the rise of the mafia and the boom in demand for the citrus produced on the island.

Is this another case of the resource curse?