Is it true that Athens formed the Delian League with other city-states including Sparta?

Answer 1

After the Persian invasion was repelled by the coalition of southern Greek cities, Sparta wanted to evacuate the cities in Asia Minor back to Greece to avoid further clashes with the persian Empire. Athens had a better idea - to form a league of Greek city-states in Asia Minor and the Islands against Persian intervention. Sparta was having problems with its restive serf population at home and did not join the Delian League. Athens later turned the League into an empire of its own, and lived high on the proceeds.