Archidamian War

Greek history

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June 18, 2026

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The Archidamian War (431–421 BCE) was the first phase of the Peloponnesian War, a major conflict in ancient Greece between the leading city-states of Athens and Sparta. Sparta, allied with most of the Peloponnesian land powers, and Athens, leading an empire of Aegean states, clashed due to escalating tensions and treaty violations.1

Led by King Archidamus II, Sparta initiated the war by invading Attica, the region surrounding Athens. Athens, under Pericles, adopted a strategy of avoiding land battles and utilizing its naval strength. However, a devastating plague struck Athens, weakening its forces and morale. Despite Spartan efforts, the war saw shifting fortunes, with Athenian offensives and Spartan successes in various regions. The Archidamian War concluded with the Peace of Nicias in 421 BCE, a truce that proved to be a fragile interlude before the conflict resumed.213

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ancient Greek civilization
Sparta’s role
…the first half of the Archidamian War (431–421), named after the Spartan king Archidamus II, unfairly in view of the wariness he is said to have expressed at the outset. Athens moved its flocks from Attica across to Euboea, whose economic importance was thus raised further still. As if in…
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…the first half of the Archidamian War (431–421), named after the Spartan king Archidamus II, unfairly in view of the wariness he is said to have expressed at the outset. Athens moved its flocks from Attica across to Euboea, whose economic importance was thus raised further still. As if in…
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Archidamus II
…conflict are known as the Archidamian War. His two sons became the Spartan rulers Agis II and Agesilaus II.
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…conflict are known as the Archidamian War. His two sons became the Spartan rulers Agis II and Agesilaus II.
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