Its second version lasted for forty years before falling apart after a defeat by Philip of Macedon.
Its second version lasted for forty years before falling apart after a defeat by Philip of Macedon. In its initial incarnation, administrative tasks were conducted in the temple of Apollo, but after failed secession attempts by Thasos and Naxos and an invasion by Spartan allies, this group's treasury was moved to the Acropolis. For 10 points, what group, originally formed as an alliance against Persia and later becoming the Athenian Empire, was named for the island that served as its initial headquarters?
Its second version lasted for forty years before falling apart after a defeat by Philip of Macedon.
{Delian} League