Amphictyonic League
In the Archaic period of Greek history, an amphictyony (Greek: ἀμφικτυονία), a "league of neighbors", or Amphictyonic League was an ancient religious association of Greek tribes formed in the dim past, before the rise of the Greek polis. The six Dorian cities of coastal southwest Asia Minor, or the twelve Ionian cities to the north, a dodecapolis forming an Ionian League emerging in the aftermath of a dimly-remembered "Meliac war" in the mid-7th century BC, were already of considerable antiquity when the first written records emerge.
Ancient historiography
Thucydides made recollection of the Lelantine War, apparently fought in Euboea sometime between the late 8th century BC and the first half of the 7th century BC:
Historians have puzzled over the broader meanings of "alliance" in such early times. "But comparatively large-scale associations lead more readily to contacts, to friendships and enmities at a distance than do little city-like units," George Forrest notes, remarking apropos that Phrygia and Assyria were at war with each other about 720–710 BC, raising tensions among interested Greeks.