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The beginning of the classic period in the Maya civilization
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The city-state of Teotihuacan becomes the dominant city and rules over the Maya highlands.
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The city-state of Tikal is defeated by an alliance of other city-states.
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The powerful city-state of Teotihuacan declines and is no longer a cultural center.
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One by one, the Classic cities in the southern lowlands were abandoned, and by A.D. 900, Maya civilization in that region had collapsed.
