The Plague of Athens was a devastating epidemic that struck the city-state of Athens during the Peloponnesian War from 430 to 426 BCE, causing significant loss of life and impacting the social and political landscape of ancient Greece. The outbreak is thought to have resulted in the death of nearly a third of Athens' population, which weakened the city-state both militarily and economically, playing a crucial role in its eventual decline and the rise of Sparta as a dominant power in Greece.
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