An emboldened Athens sails across the Aegean to support revolts against Persia. In doing so they eventually gain the undivided attention of the world’s superpower. The international troubles drive a cunning and battle-hardened leader back to Athens, Miltiades. We see the divisions that are inherent to democracy and the brutal tactics of Cleomenes, one of the kings of Sparta. This episode covers approximately 500 BC – 490 BC.
The Persian fleet that was largely destroyed on their way to punish Greece was sought for a while. You can find more information on what they found here: http://nautarch.tamu.edu/pwss/homepage/