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  Roman Empire ends in the West
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  Citizens from Teotihuacan make their way to Tikal, introducing new ideas involving weaponry, captives, ritual practices and human sacrifice.
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  The Aztecs built their city on a lake, which made for fertile soil.
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  The disease spreads throughout Europe, killing millions.
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  Causeways were raised roads that provided transportation.
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  An important meeting that Martin Luther attended
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  This war weakened the empire and the Spanish took over
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  Jamestown was the first permanent settlement
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  Christianity becomes official religion of Roman Empire
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