Key Facts
- Founded
- 338–337 BC by Philip II of Macedon
- Purpose
- Unified Greek military coalition against Persia
- Notable exclusion
- Sparta refused to join
- Revival
- Briefly revived by Antigonid rulers of Macedon
- First council location
- Corinth (giving the league its modern name)
Imperial Zenith Metrics
Historical Trajectory
Phase I: Rise
Following his decisive victory at the Battle of Chaeronea in 338 BC, Philip II of Macedon compelled most Greek city-states to join a new federation under Macedonian hegemony. Inspired partly by Isocrates' earlier call in 346 BC for Greek unity against Persia, Philip convened the first council at Corinth, establishing a synedrion that subordinated the member poleis to Macedonian strategic leadership while nominally preserving their autonomy.
Phase II: Zenith
Under Alexander the Great, who inherited the League after Philip's assassination in 336 BC, the coalition provided the political and military framework for the invasion of the Persian Achaemenid Empire. Alexander led the combined Hellenic forces across Asia Minor, Egypt, and into the heart of Persia, presenting the campaign as pan-Hellenic revenge for the Persian Wars and legitimizing Macedonian dominance through shared Greek identity.
Phase III: Decline
The League effectively dissolved following Alexander's death in 323 BC, which triggered the Lamian War as Greek city-states attempted to break free from Macedonian control. Though Macedonian forces under Antipater suppressed the revolt, the unified league structure collapsed. Antigonid rulers of Macedon briefly revived a similar Hellenic Alliance, but sustained Greek political unity under a single body was never fully restored.
Notable Imperial Reigns
Selected rulers mapping the empire’s trajectory