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12,000 BCE
Asians begin several migrations over Bering Strait
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Period: 12,000 BCE to 1492
Pre-Columbian Cultures
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5000 BCE
Maize cultivation begins in southern Mexico
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700 BCE
Olmec people flourish along Gulf of Mexico
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100
Hopewell culture sets up massive trading network
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300
Mayan city of Tikal features 20,000 residents and many temples
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500
Teotihuacan's population reaches 100,000 at peak of culture