Messenia

362 BCE
July 4

Epaminondas and Boeotia defeat Sparta at the Battle of Mantinea. However, the death of Epaminondas would spell Thebes‘ downfall. On the side of Thebes were Tegea, Argos, Messene, Sikyon, and the Aenianians. On the side of Sparta were Heraia, Athens, Elis, and Mantinea.

220 BCE

The Social War begins, pitting members of the Achaian League, including Aegira, Patrai, Dyme, Bura, Sikyon, Corinth, Megalopolis, Messenia, Argos, Elis, and Macedon, against Sparta under King Kleomenes III, who were supported by the Aetolian League and Athens.