Answer: They declined over time.
Explanation: They declined over time. Mycenaean kingdoms fought one another, and earthquakes destroyed their palace fortresses.
With the mysterious end of the Mycenaean civilization during the Bronze Age Collapse around 1200 BCE (possibly through earthquake, invasion or in-fighting) came the so-called Dark Ages and it would be many centuries before Greek culture would finally regain the heights of the late Bronze Age.
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