 Complete the following phrase:  Its economy was rich, with the presence of several Tuscan bankers, including Agostino Chigi, who was a friend of Raphael and a patron of arts. Before his early death, Raphael also promoted for the first time the preservation of the ancient ruins. The War of the League of Cognac caused the first plunder of the city in more than five hundred years since the previous sack; in 1527, the Landsknechts of Emperor Charles V 