Topic summary
Doric Tetrapolis

Extracted from the Wikipedia article Doris (Greece).
History
During the invasion of Xerxes, Doris submitted to the Persians, and consequently its towns were spared. Doris was one of the oldest members of the Delphic Amphictyony and, according to Thucydides, it was an important and strategic region already 25 years before the Peloponnesian War, the first time when the Phocaeans and the Lacedaemonians first clashed against each other, the former as invaders and the latter as protectors of the Doric capital Kytinion. In the 3rd century BC the Doric Tetrapolis joined the Aetolian League. Subsequently, as we have already seen, they were assisted by the Lacedaemonians, when attacked by the more powerful Phocians and neighbouring tribes. Their towns suffered much in the Phocian, Aetolian, and Macedonian wars, so that it was a wonder to Strabo that any trace of them was left in the Roman times. (Strab. ix. p. 427.) The towns continued to be mentioned by Pliny