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the fall of the western roman empire is a massive fall in 476CE
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was crowned emperor of Romans in 800CE by pope Leo the third
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the first crusade is decreed by pope urban the second
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signed by king john of England in 1215CE
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the great famine was in Ireland where potato crops failed in 1315-1317CE
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the black death was the most terrible disease during the middle ages lasted till 1348-1350CE
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the great schism is when the roman catholic church and the eastern orthodox church which lasted 1378-1417CE