Question: Pericles was a general of Athens after which conflicts between the Achaemenid Empire and Greek city-states?
Sentence (from "Fifth-century Athens"): The period began in 478 BC after defeat of the Persian invasion, when an Athenian-led coalition of city-states, known as the Delian League, confronted the Persians to keep the liberated Asian Greek cities free.
Relevant evidence: No