Politically, the decades leading up to Elizabeth's reign were full of conflicts between Frederick III, King of Sicily, and Robert of Naples who had the backing of the papacy in Avignon. Famine, warfare, and plague were widespread in Europe during the mid-fourteenth century, which had a devastating impact on Sicily in particular, due to its economic expansion and prosperity in the two centuries prior. Elizabeth's reign occurred during a period where Italian citizens were disheartened and anxious, which caused tension among the local populace. The island was also marked by turbulent relations between the throne and Sicily's noble families, eventually degenerating into a civil war. These internal rivalries between the noble families required the coming of age of Elizabeth's sons to resolve the fighting.