530BC The Persian Wars begin.

521BC King Darius I has expanded the Persian empire from the Nile River to the Indus Vally

513BC Persians invaded Europe

508BC Sleisthenes sees power in Athens and introduces reforms which lead to democracy

500-499BC Greek conoliens revolt agenct Persians rule

490BC Persians defeated at battle of Marathon

486BC Darius died

480BC Xerxes sent 200,000 soldiers in ships to attack greece.