Why was the Battle of Chaeronea important for Greece?

The Battle of Chaeronea (338 BCE) was a pivotal event in Greek history because it effectively ended military resistance to Philip II of Macedonia and established Macedonian hegemony over the region.1

By defeating a coalition of Greek city-states led by Athens and Thebes, Philip secured the dominance necessary to reorganize Greece under his leadership. This victory allowed him to establish the League of Corinth, an alliance of Greek states that mandated a general peace and unified the Greeks for a planned military campaign against Persia.1234

The battle fundamentally shifted the political landscape of Greece, moving it away from the independent, often conflicting city-state model toward a structure where Philip acted as hēgemōn (president/leader) with the power of Macedonia to enforce stability. This transition set the stage for the subsequent military campaigns led by his son, Alexander the Great.314