What is 400?
{{Year nav|400}} {{Year in various calendars|400}} {{Year article header|400}} == Events == *First invasion of [[Italy]] by [[Alaric I|Alaric]] (probable date). *The [[Vandals]] start their westward trek from [[Dacia]] and [[Hungary]] (approximate date). *Construction (and therefore occupation) at [[Great Zimbabwe]] begins (approximate date). *Earliest date of human occupation on [[Easter Island]] (approximate date). *[[Chrysanthemum]]s are introduced to [[Japan]] (approximate date). [[Category:400s]]