It was the site of a battle between Athens and Plataea and a Persian expeditionary force sent to take over Athens and reinstall an Athenian tyrant to prevent it causing further trouble within the Persian Empire. The Athenians repelled the Persian force at the battle.
The persian wars that took place near marshes were the Thermopylae and Marathon wars.
The Battle of Marathon started in 490 BC. A couple years after the Persian Wars
Marathon and Plataea.
The Persian Wars lasted from 499-448 BC. The Pelopenesian Wars lasted from 431-404 BC So the answer is: The Persian Wars happened first.
Persian-Uzbek Wars happened in 1510.
Greco-Persian Wars happened in -449.
At Marathon and Salamis, the Greek cities defeated the Persian forces. At Thermopylai the Persian forces defeated the Greek cities.
It was the war which happened in 490 BCE and was decided by the Athenian victory over the Persians at the Battle of Marathon.
When the Persian force confronted the Athenian-Plataean force at Marathon, it sent its cavalry by sea to capture undefended Athens. After defeating the Persian infantry at Marathon, the Athenians realised what was happening and ran back the 26 miles to the city, just in time to confront the disembarking Persian cavalry, which, frustrated, went home.
It was the war between Greece and Persian people called the battle of Marathon.
To prevent Persian takeover of the Greek cities in Europe as had already happened to the Greek cities in Asia.
One only - at Marathon. The other battles involved the other Greek states with Athens as a participant.