The Peloponnesian League was an alliance of city-states in the Peloponnesus region of Greece, primarily led by Sparta, established to promote mutual defense and safeguard their autonomy against external threats, especially from Athens. This alliance played a significant role in the conflicts of the ancient Greek world, particularly during the Peloponnesian War, where it stood in opposition to the Delian League, which was led by Athens.
congrats on reading the definition of Peloponnesian League. now let's actually learn it.