The Athenian Empire is described elsewhere (Delian League, Athens).
Thucydides, who quotes this passage to show the ancient character of the Delian festival, seems to have no doubt of the Homeric authorship of the hymn.
8 The Greek cities, faring ill under Persia, and organized by Onesilaus of Salamis, joined the Ionic revolt in 500 B.C.; 9 but the Phoenician states, Citium and Amathus, remained loyal to Persia; the rising was soon put down; in 480 Cyprus furnished no less than 150 ships to the fleet of Xerxes; 1° and in spite of the repeated attempts of the Delian League to " liberate " the island, it remained subject to Persia during the 5th century."
In his attitude towards the members of the Delian League Pericles likewise maintained a purely Athenian point of view.
In the 5th century the three cities were enrolled in the Delian League, and democracies became prevalent.