Who or what - two diffenent questios - nominate your pick.
Darius I led the Persians in the First Persian War. Xerxes I led them in the Second.
By the Persian king Xerxes.
Sparta and Athens were allies against Persia in the Persian War.
The commanders appointed by the Persian kings and by the Greek city-states.
The Ionian Revolt
Darius I.
On tthe Persian side, the Persian king. On the Greek side, first Sparta, then Athens.
The leading citizen from 479 to 450 was Cimon, however he was a general who mostly led in war. The Athenians rebuilt the city in the year after the Persian invasion was repelled, organised by Themistocles, who was influential for 20 years 493-472 BCE.
It led the anti-Persian league, became democratised and established an emprie.
They were leaders the Persian Empire. Darius was the father of Xerxes. Darius led the Persians in the first Persian war, while Xerxes led the Persians in the second Persian war.
The Persian failed invasion of mainland Greece 480 to 479 BCE.
It was part of a coalition led by Sparta which repelled an invasion by the Persian Empire.