They were defeated at three battles - sea battle of Salamis 480 BCE, land battle of Plataea and simultaneous sea-land battle of Mycale 479 BCE.
Leonidas was king of Sparta when xerxes led the Persians to attack Greece, leonidas led the famous 300 spartens to meet the Persians and bought the rest of Greece enough time to asemble an army capable of defeating xerxes.
Ferociously.
It was blocking his advance to Southern Greece.
With their cavalry.
she gives him advice on how to attack the greece
Their kings, first Darius, then his son Xerxes.
Aegean Sea
A decade.
Athens and Sparta.
They lost.
180,000 Persians won. This took place in the battle of Thermopylae. Leonidas and his army of 6,000 to 7,000 Spartans but were delayed by the Persians when a Greek traitor showed the Persians how to attack from both sides. Leonidas commanded all of his soldiers to escape except for 300 Spartans.
From Gallipoli through Thrace, Macedonia and Thessaly into mainland Greece.