The Athenian navy decisively defeat a large Persian fleet and save Greece from Invasion in the Battle of Salamis. This battle was fought on the Salamis Island. In 480 BC.
Aristocrats wanted to retain their power and wealth by taxing the people and the philosophers wanted to establish democracies that would give more power and wealth to the people. Basically the condition of the life of the people was so bad compared to the decadence of the aristocrats that revolution was inevitable.
Answer: The story of North American exploration spans an entire millennium andinvolves a wide array of European powers and uniquely American characters