Despite the turbulent nature of Greek politics,[9] the Spartans found themselves on the same side as the newly formed Cleisthenes democracy of Athens; though they didn't just kill their heralds, as the Athenians did, but threw them into a well, answering their demand for 'earth and water' with the retort "Dig it out for yourselves".[10]
Support gathered around these two leading states. A congress met at Corinth in late autumn of 481 BC,[11] and a confederate alliance of Greek city-states was formed. It had the power to send envoys asking for assistance and to dispatch troops from the member states to defensive points after joint consultation. Herodotus calls them simply "?? ???????" (the Greeks) or "the Greeks who had banded together." Sparta and Athens had a leading role in the congress[12] but interests of all the states played a part in determining defensive strategy. Little is known about the internal workings of the congress or the discussion during its proceedings, though only 70 of the approximately 700 Greek cities sent