420 BC

Also known as 420 BCE

year

AI overview

I don't have specific context provided about what "420 BC" refers to beyond it being a year. Without additional information about a particular historical event, person, work, or phenomenon associated with that date, I cannot write an accurate overview as requested.

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Encyclopedic overview

Year 420 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Cincinnatus and Medullinus (or, less frequently, year 334 Ab urbe condita). The denomination 420 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

Excerpted from Wikipedia’s “420 BC” article, available under the CC BY-SA 4.0 licence.