The Twilight of Civilizations
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Oct 27, 2012
How did the most prestigious human civilizations decline and finally collapse? Archeologists are excavating the sites where these civilizations once thrived to find new answers to these crucial questions.
Drastic and sudden climate change, religious and political struggles, societal upheavals -- all of these causes may have led to the decline of the civilization that left behind Angkor Wat.
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