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I don't have specific context provided about what happened in 455 BC to give you an accurate overview. To write a reliable 2-sentence summary, I would need information about the historical event, person, or phenomenon you're referring to. Could you provide more details about what "455 BC" refers to?
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Article
Year 455 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Vaticanus and Cicurinus (or, less frequently, year 299 Ab urbe condita). The denomination 455 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
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