Question

who introduced the system of ostracism​

Answer 1

Answer:

Soon after their victory over the Persians at the battle of Marathon in 490 B.C., the Athenians began the practice of ostracism,

Answer 2

Answer:

Ostracism is said by Aristotle, in his Constitution of Athens, to have been introduced by Cleisthenes in his reform of the Athenian constitution after the expulsion of Hippias (c. 508 bc), but the first use of it seems to have been made in 488–487 bc, when Hipparchus, son of Charmus of Collytus, was ostracized.

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