Because in Sparta and Athens, only Athens can represent the Greek civilization at that time. (1) Sparta's superior agricultural production conditions are an exception in Greece; (2) The Herodotus system of Sparta is a substitute for classical slavery characterized by Greek civilization, while Athens is a model of classical slavery; (3) Lacuku made Sparta a "living fossil" of Greek history by artificially restoring the primitive communist system; As the commercial center and cultural capital of the Greek world, Athens has become the epitome of Greek civilization; (4) The "city-state principle" embodied by Sparta actually only existed in the primitive peasant commune stage, and the real city-state principle was embodied by Athens.