I don't have specific context about what happened in 457 BC to provide you with an accurate overview. To write a reliable 2-sentence summary, I would need additional information about the particular historical event or figure associated with that year that you're interested in learning about.
AI-generated from the Wikipedia summary — may contain errors.
Year 457 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Pulvillus and Augurinus or Cincinnatus and Vibulanus (or, less frequently, year 297 Ab urbe condita). The denomination 457 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.
Events
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