How did the Peloponnesian War differ from earlier conflicts in Greece? A.Sparta and Athens found themselves on opposite sides. B.It was the first time Greek poleis had formed alliances. C.Earlier wars

How did the Peloponnesian War differ from earlier conflicts in Greece? A.Sparta and Athens found themselves on opposite sides. B.It was the first time Greek poleis had formed alliances. C.Earlier wars were all against foreign invasions. D.It was ultimately more divisive and destructive.