The Spanish branch of the Habsburg family dominated Italy between 1530-1700 under Emperor Charles V and his successor Philip. Charles V directly controlled the Kingdom of Naples, Sicily and the Duchy of Milan and wielded deep influence elsewhere, reorganizing some states and ushering in a period of relative peace and stability. Meanwhile, the city-states of Italy transformed into regional states. From 1701-1748, Western Europe went to war over succession of the Spanish throne, with battles in Italy and the region becoming a prize fought over between the Bourbons and Habsburgs. The Treaty of Aix-la-Chapelle ended shifting control in Italy and brought about 50 years of relative peace.