AI overview
I cannot provide an overview of "401" based only on the context that it is a "year," as this is insufficient information to determine what "401" refers to (it could be a tax code, a historical year, a room number, a highway, or many other things). To write an accurate overview, I would need additional context about which specific "401" you're asking about.
AI-generated from the Wikipedia summary — may contain errors.
Article
Alaric I, king of the Visigoths
Year 401 (CDI) was a common year starting on Tuesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Vincentius and Fravitus (or, less frequently, year 1154 Ab urbe condita). The denomination 401 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.