context: The Peloponnese War was fought mainly between the federations led by Athens and Sparta between 431 and 404 BC. After the Persian wars, the power of Athens had grown tremendously, and other city powers feared that Athens would become too powerful. Eventually a war broke out between Sparta and Athens. The Peloponnese War was one of the turning points in ancient Greek history. The war drew almost all of the Greek city-states and resulted in the death of an unprecedented number of people. During the war, both sides also committed atrocities that had previously been spared.
question: Who fought in the Peloponnese War?
answers.text: almost all of the Greek city-states