The victory of Philip at Chaeronea in 338 finally destroyed the league.
He succeeded his father in 338 B.C., on the very day of the battle of Chaeronea.
In 339 the Phocians began to rebuild their cities; in the following year they fought against Philip at Chaeronea.
As forerunners of Neoplatonism we may regard, on the one hand, those Stoics who accepted the Platonic distinction between the sensible world and the intelligible, and, on the other hand, the so-called Neopythagoreans and religious philosophers like Plutarch of Chaeronea and especially Numenius of Apamea.
After this we find it taking sides with one or other of the leading states, until, after the battle of Chaeronea, it passed into the hands of Philip II.