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tent of the article.Time Events Before the middle of the 5th century People in Britain all spoke a language called Celtic At the end of the 9th century The Vikings invade Britain and brought their language By the 10th century Old English was the official language of England In 1066 The Normans conquered England and took control By the latter of the 14th century English was adopted by all classes in England In 1399 Henry IV became King of London and used