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  Massacre of St. Brice's Day--Aethelred orders the slaughter of all Danish settlers and mercenaries in southern England.
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  In retaliation for the Massacre of St. Brice's Day, Sweyn leads an army of Norsemen to land in England and wreak a terrible vengeance.
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  pays Danegeld to gain two years peace. The cost of this bribe is 36,000 pounds in silver.
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