The League existed since the 5th century BC. It was at the time not a fully-fledged federation ("sympoliteia") as elsewhere in Greece, but a loose confederation of the Acarnanian cities. An assembly of representatives met at Stratos, having also power of negotiating treaties with other states, a supreme court existed at Olpae (in common with the Amphilochians), and there was a common coinage and cult, but no federal officials and no common foreign policy. Thus, although the League sometimes acted for all its members, as in the alliance with Sparta in 390 BC or the joining of the Second Athenian League in 375/4 BCE, at other times individual member city-states acted independently, e.g. during the Third Sacred War, where the cities Alyzia and Anaktorion participated as Theban allies while the rest of the League remained neutral.