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787- First Viking attack on England.
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Alfred the Great (king of Wessex) makes a treaty with the Danish Vikings; they are given control of an area of east Britain in with to settle and trade (known as the Danelaw).
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He sails west and discovers Greenland
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In England, King Edward dies. Harold Godwinson becomes king. Another contender, William of Normandy, defeats King Harold at the battle of Hastings and becomes King of England. He becomes known as William the Conqueror.