History of the Cyclades 6th century BC). The Persians tried to take them during their attempts to conquer Greece. Then they entered into Athens' orbit with the Delian Leagues. The Hellenistic kingdoms disputed their status while Delos became a great commercial power. Commercial activities were pursued during the Roman and Byzantine Empires, yet they were sufficiently prosperous as to attract pirates' attention. The participants of the Fourth Crusade divided the Byzantine Empire among themselves and the Cyclades entered the Venetian orbit. Western feudal lords created a certain number of fiefs, of which the Duchy of Naxos was the most important. The Duchy was conquered
History of the Cyclades the rare shipowners’ islands that managed to operate steam engines (for example, the source of the Goulandris’ fortune) and until the 1960s-1970s, it supplied the Hellenic Navy with numerous sailors. To this day, a certain number of natural resources offer the Cyclades occupations other than tourism. On certain islands, agriculture is still an activity of paramount importance, indeed so developed that the island could do without the presence of tourists (this is the case for Naxos). The Cyclades produce but above all export wine (Andros, Tinos, Mykonos, Paros, Naxos, Sikinos and Santorini), figs (Syros, Andros, Tinos, Mykonos, Naxos and Sikinos),