Answer:
Well first the Athens government is a direct government. Sparta isn't. Athens ruled Ancient Greece for many years and were the most powerful group. Then during the Peloponnesian war, which was Sparta v.s the powerful Athens (in the 400's B.C) at the end, we ended with a new powerful group called Sparta. The Spartanians were so releaved and excited and Athenians so depressed. That is a big difference in Greek City-States government. Some similarities is that they both had citizens that had to be males, but a big difference between that is to be a citizen in Athenia, you had to be a male, but you had to have family in that city-state for 3 generations. In Sparta and other city-states you had to be also a male, but had to be born in that city-state which made a lot of Citizens.
Thanks! AncientGreekGirl :)