Peloponnesian War, (431–404 bc), war fought between the two leading city-states in ancient Greece, A Athens and Sparta. Each stood at the head of alliances that, between
them, included nearly every Greek city-state. The fighting engulfed virtually
the entire Greek world, and it was properly regarded by Thucydides, whose
contemporary account of it is considered to be among the world’s finest works
of history, as the most momentous war up to that time.
A brief treatment of the Peloponnesian War follows.
