Frederick's reign, which ended in 1337 with the succession of his son Peter, was a tale of two types. The early years were an attempt at reconstruction from the fighting with Naples that ended in 1302. Frederick wanted to integrate the people of Sicily and unite them into a true Kingdom of Sicily. He attempted to do this by drawing on the people's hate of the Angevins and was largely successful. During this reconstruction process, the Sicilians saw improvement in their fortunes, both culturally and commercially, until around 1312. However, as invasions by the Angevins increased during the 1310s, Sicily was ravaged. Siding with the Ghibellines resulted in a loss of Guelph trading partners in northern Italy. It appears that most Sicilians were ambivalent to the Guelph/Ghibelline conflict, which made Frederick's decision seem unreasonable. Various food crises also occurred between 1311 and 1335. After 1321, the economy was in ruins. Constant port blockades by Robert of Naples hurt Sicily further, and by 1325 its economy was destroyed. Frederick's government became increasingly hated and powerless. The economic burden of constantly being at war had taken its toll on the population. The king had also dispensed the majority of his personal wealth to churches and hospitals, so there was nothing left to give barons or ecclesiastical leaders. If all of this was not bad enough, eruptions of Mount Etna in 1329 and 1333 signaled to Sicilians that God was punishing them for Frederick's sins. Once the decline started, it just got worse and worse. When Frederick died in 1337, civil war broke out in Sicily, with the barons feuding for control of the island. Peter II and Elizabeth were left with a kingdom that went from a high point in the early part of Frederick's reign, to a low point at his death when Sicily was in shambles. The decisions made by Frederick may have protected Sicily from the Angevins, but it came at a cost that would be a common theme when Elizabeth became Queen.