Military coalition of Greek city-states led by Sparta, formed in the 6th century BC. League decisions about war, peace, or alliance were determined by congresses summoned by the Spartans. The league was a major force in Greek affairs, forming the core of resistance to the Persian invasions in 490 and 480 and fighting Athens in the Peloponnesian War. Its power declined after its defeat at Leuctra in 371, and the league disbanded in 366/365.
Variants of PELOPONNESIAN LEAGUE
Peloponnesian League or Spartan Alliance
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