Answer:
B.)Athens inerfered in Persian affairs
Explanation:
The Greco-Persian wars were a series of wars between the kingdom of Persia and the Greek city-states lead by Athens and Sparta. In 490 BC, Persia attacked Athens across the Aegean Sea to punish them because they gave military help to Ionians during the Ionian outbreak, which lasted until 493 BC. But, on their way to attack Athens, Persians were defeated by the Athenians at the Battle of Marathon.
