The answer is iron. The Hittites learned to smelt and work with the element before any other civilization.
Answer:
The Greeks simply wouldn’t accept the idea of being invaded by another country and they fought until they won. Another factor was that by uniting the city-states, particularly the Spartans and Athenians, it created a skilled, well balanced army that was able to defeat the Persians despite their numbers.
Explanation:
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poltical and economic isolation