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  Roman Emperor Constantine converts to Christianity.
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  Anglo-Saxon England Anglo-Saxon England
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  Wikipedia: Roman Empire510 BCE Romans establish the Roman Republic.
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  Wikipedia: Bubonic Plague554 CE Bubonic Plague strikes Constantinople and spread throughout the Byzantine Empire.
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  Britons arrive on the European continent.
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  Wikipedia: Caedmon's HymnCaedmon The poet Caedmon composes Caedmon's Hymn in 660 BCE.
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  Wikipedia: BeowulfBeowulf was was written.
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  St. Bede writes it.
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  Battle of HastingsWilliam the Conqueror defeats Anglo-Saxons.
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  First part of Stonehenge is built in 3000 BCE. Remember: TimeToast won't recognize BCE, which is in distant past.