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 and then surpassed it. Today, tourism in the Cyclades is a contrasting phenomenon. Certain islands, like Naxos with its important agricultural and mining resources, or Syros, which still plays a commercial and administrative role, do not depend solely on tourism for their survival. This is less true for small, infertile rocks like Anafi or Donoussa, which numbers (2001) 120 inhabitants and six pupils in its primary school but 120 rooms for rent, two travel agencies and a bakery open only during summer. In 2005, there were 909 hotels in the Cyclades, with 21,000 rooms and 40,000 places. The main tourist