Antigonus I Monophthalmus
Thus in 314 BC, Antigonus I Monophthalmus created the Nesiotic League around Tinos and its renowned sanctuary of Poseidon and Amphitrite, less affected by politics than the Apollo's sanctuary on Delos. Around 308 BC, the Egyptian fleet of Ptolemy I Soter sailed around the archipelago during an expedition in the Peloponnese and “liberated” Andros. The Nesiotic League would slowly be raised to the level of a federal state in the service of the Antigonids, and Demetrius I relied on it during his naval campaigns.