By the Greek city-states combining to defeat the Persian army and navy.
When was the 'First' Persian War.
The greeks
me!
It was the Battle of Thermopylae in the Second Persian War. The Greeks won. Shortly after Thermopylae the Athenian Navy defeated the Persian Navy at Salamis, and in the next year the Persian Army was defeated by a combined Greek Army at Plataea.
The Persian War was won by the Greek city-states who ban ded together to see off the Persian attempt to incorporate them within its empire. They won it by progressively establishing naval and land supremacy over the Persian forces over a period of fifty years, so that the Persians gave up.
A confederation of Greek city-states.
The Greek city-states in Asia Minor revolted against Persian rule, and spread to mainland Greece. The Greeks won.
Plataia was a battle in the 50 year Persian War. A coalition of Greek city-states defeated a Persian expeditionary force in the battle.
President Bush
The Persians would have won if Sparta and Athens had not united to fight the Persian Army
A coalition of southern Greek city-states defeated the invading Persian army and its Greek allies.
They were two different wars - the Persian War wass the persian Empire versus the mainland Greek cities, and the Peloponnesian War was between Greek cities. The Greeks won some, lost some in both wars.