Arcadian League

The Arcadian League (Ancient Greek: Κοινὸν τῶν Ἀρκάδων) was a league of city-states in ancient Greece. It combined the various cities of Arcadia, in the Peloponnese, into a single state. The league was founded in 370 BC, taking advantage of the decreased power of Sparta, which had previously dominated and controlled Arcadia. Mantinea, a city that had suffered under Spartan dominance, was particularly prominent in pushing for its founding. The league was responsible for the foundation of Megalopolis.

League of the Arcadians
Κοινὸν τῶν ʼΑρκάδων
Koinon ton Arkadon
370 BC
Common languagesArcadian Greek
Ancient Greek religion
LegislatureArcadian assembly
Historical eraClassical Antiquity
370 BC
Preceded by
Succeeded by
Peloponnesian League
Achaean League
Today part ofGreece

Although initially successful in resisting Spartan influence in Arcadia, the league was soon divided in the power struggles that engulfed Greece in the 4th century BC. Thebes, which had been instrumental in the founding of the league, soon came into conflict with Mantinea. At the Battle of Mantinea (362 BC), the cities of the league fought against each other, Mantinea fighting alongside Sparta and Athens, while Tegea and others sided with Thebes.

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