Who did the Greeks defeat prior to the Golden Age of Greece?

I don't know if this is correct but I believe they fought their rivals in the Persian Empire

The golden age of Greece lasted for little more than a century but it laid the foundations of western civilization. 

Explanation:

The age began with the unlikely defeat of a vast Persian army by badly outnumbered Greeks and it ended with an inglorious and lengthy war between Athens and Sparta.

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you answered my friends question just to get the coins you didn't even give a valid response.

d. a week

hope this