The League of Corinth was established by King Phillip with the purpose of keeping the peace between members and punishing Persia who had attempted to invade Greece twice. States such as Athens and Thebes joined and - in doing so - swore their loyalty to Phillip and his descendants. After Phillip’s death, Alexander became king and, therefore, the new leader of the league. This provided a great number of benefits to Alexander as it allowed him to rule a partly unified Greece who had sworn their loyalty to him, as well as allow him to pursue an invasion of Persia knowing Greece was secure. However, many Greek states hadn’t joined out of their own free will, feeling pressure from Phillip’s army, and they began to revolt against Alexander. Four significant revolts were located in Thebes, Athens, Sparta, and Aetolia, however, these revolts failed quickly with many states welcoming Alexander and apologizing for not recognizing him as their new leader. Although the league began successfully, it fell through once Alexander became king as many more continued to revolt such as the Theban revolt as well as the revolt of Agis III of Sparta, showing how when given the opportunity, states would revolt against Alexander and ally with Persia.
