Kingdom of Sicily
Society

During the Norman Kingdom of Sicily, the local communities maintained their privileges. The rulers of the Hohenstaufen kingdom replaced the local nobility with lords from northern Italy, leading to clashes and rebellions against the new nobility in many cities and rural communities. These revolts resulted in the destruction of many agrarian areas and the rise of middle class nationalism, which eventually led to urban dwellers becoming allies of the Aragonese. This situation was continued during the short rule of the Angevins until their overthrowing during the Sicilian Vespers. The Angevins began feudalising the country, increasing the power of the nobility by granting them jurisdiction over high justice.

At the same period, the feudalisation of the Kingdom of Sicily was intensified, through the enforcement of feudal bonds and relations among its subjects. The 1669 Etna eruption destroyed Catania. In 1693, 5% of the Kingdom's population was killed because of earthquakes. During that period, there were also plague outbreaks. The 17th and 18th century were an era of decline of the kingdom. Corruption was prevalent among the upper and middle classes of the society. Widespread corruption and mistreatment of the lower classes by the feudal lords led to the creation of groups of brigands, attacking the nobility and destroying their fiefs. These groups, which were self-named "mafia", were the foundation of the modern Sicilian Mafia. The escalation of revolts against the monarchy eventually led to the unification with Italy.

The kingdom had a parliament from 1097, which continued to sit throughout the realm's history until the Sicilian Constitution of 1812.
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