It was colonized by the Athenians in B.C. 437, who drove the Edonians out of the place. It was one of the most important of the Athenian possessions in the north of the Aegaean Sea. Hence their indignation when it fell into the hands of Brasidas (B.C. 424), and of Philip (B.C. 358). The port of Amphipolis was Eion. (Harpers Dictionary of Classical Antiquities, 1898)
A town in Macedonia, on the eastern bank of the Strymon, about three miles from the sea. The Strymon flowed almost round the town, nearly forming a circle, whence its name Amphi-polis. It was originally called Ennea Hodoi, the "Nine Ways," and belonged to the Edonians, a Thracian people.