Question: What did the Greeks do that made it possible for the expansion and growth of the opposite of the Eastern Civilization ?
Sentence: The classical period of Greek civilization covers a time spanning from the early 5th century BC to the death of Alexander the Great, in 323 BC (some authors prefer to split this period into 'Classical', from the end of the Persian wars to the end of the Peloponnesian War, and 'Fourth Century', up to the death of Alexander).
Answer in sentence: no