What historical event inaugurated the Hellenistic era of Greek civilization?a

Writing Jan 15, 2021

What historical event inaugurated the Hellenistic era of Greek civilization?a. the Athenians' defeat of the Persians in 480 B.C.b. the arrival of invaders who devastated Mycenaean citiesc. Alexander the Great's conquests in Egypt, Mesopotamia, and Asiad. Pericles' reconstruction of the Athenian acropolis