Who won the Peloponnesian War?
Peloponnesian War
{'answer_start': array([89]), 'answer_text': array(['Sparta'], dtype=object)}
The overall effect of the war in Greece proper was to replace the Athenian Empire with a Spartan empire.  After the battle of Aegospotami, Sparta took over the Athenian empire and kept all of its tribute revenues for itself; Sparta's allies, who had made greater sacrifices for the war effort than had Sparta, got nothing.[1]