Aristagoras of Miletus, who was probably the key man behind the Ionian Revolt, first asked Cleomenes I of Sparta to help him - the Spartans denied him only because Persia was too far away for comfort, as Argos would be sure to take advantage of Sparta's armies being across the Aegean. Anyways, later he asked the Athenians, who accepted, and we know the story from there. But say Cleomenes accepted... how might the Ionian revolt have changed with Spartan leadership, and how might Persia have responded with it being Sparta instead of Athens that aided the Ionians? (and we're assuming that Argos doesn't take advantage of Sparta's armies campaigning in Asia, for whatever reason)
One of the most interesting things (I think) with this is that Sparta might be able to get some contributions from the early Peloponnesian League, which could have some implications.
One of the most interesting things (I think) with this is that Sparta might be able to get some contributions from the early Peloponnesian League, which could have some implications.