Complex sentence: The Yayoi period lasted from about 400 or 300 BC until 250 AD, following the Jōmon period, and is named after Yayoi, a subsection of Bunkyō, Tōkyō, where archaeological investigations uncovered its first recognized traces.
Split into simpler sentences: The Yayoi period lasted from about 400 or 300 BC until 250 AD. This period is named after Yayoi town, the subsection of Bunkyō, Tōkyō, where archaeological investigations uncovered its first recognized traces.