Actually no the first war toke place at the Battle of Marathon during the rule of Darius.
Greece. There were two Persian Wars. The First Persian War in 490 BC had only one major battle (Marathon). The Second Persian War in 480-479 BC had three major battles (Thermopylae, Salamis, Plataea). Salamis was a sea battle. The sites can be found on a map of ancient Greece, and possibly even on a map of modern Greece.
There was no 'Thrmopylai War'. there was a short engageent at Thermopylai as part of the Persian pust into southern Greece.
Thermopylae was a small delaying action at the pass leading into southern Greece. The Spartan survivors were Aristodemus and Eurytus who had been ill and not at the battle. All others of the 2,400 Spartan infantry and their supporting light infantry were killed.
5th Century BCE - 480 BCE to be precise, and Thermopylae was not a war but rather a small battle in a 50-year war.
Thermopylai was a battle in the Persian War.
The answer is the Persian war.
It was not a war, it was three days of holding the pass and then withdrawing.
They joined the spartans and won the war
The Persian war ended Persian expansion to the west. Thermopylae was a minor tactical delaying action which failed.
Thermopylai was a minor action in the two-year Persian invasion of mainland Greece, where a small combined force from the southern Greek city-states blocked the pass for three days before withdrawing.
First Sparta, then Thebes, then Macedonia.
stagey*