History of the Cyclades by the Ottoman Empire, which allowed the islands a certain administrative and fiscal autonomy. Economic prosperity continued despite the pirates. The archipelago had an ambiguous attitude towards the war of independence. Having become Greek in the 1830s, the Cyclades have shared the history of Greece since that time. At first they went through a period of commercial prosperity, still due to their geographic position, before the trade routes and modes of transport changed. After suffering a rural exodus, renewal began with the influx of tourists. However, tourism is not the Cyclades' only resource today. The most ancient traces of activity
History of the Cyclades through an "ahdname" (agreement), granted privileges to the largest of the Cyclades (those of the Duchy of Joseph Nasi). In exchange for an annual tribute that comprised a poll tax and military protection, the Christian landowners (Catholic and Orthodox) kept their lands and their dominant position, negotiating taxes for their community. Thus a specific local law came into being, a mixture of feudal customs, Byzantine traditions, Orthodox canon law and Ottoman demands, all adapted to the particular island's situation. This legal idiosyncrasy meant that only native-born authorities could untangle cases. Even the language of the documents issued was a mixture