What is 400s?
{{decadebox|40}} The '''400s''' was a decade that started on 1 January 400 and ended on 31 December 409. ==Events== * [[Constantine III (usurper)|Constantine III]] seizes control of the Roman garrison in [[Roman Britain|Britain]], declares himself emperor, and crosses into [[Gaul]]. * [[August 22]], [[408]] – [[Stilicho]], military power behind the imperial throne, is executed. The Roman military is leaderless for several years until [[Constantius III]] becomes [[patrician]]. * Construction (and therefore occupation) at [[Great Zimbabwe]] begins. * Validity limit for the information on [[Eastern Roman Empire]] in the ''[[Notitia Dignitatum]]''. [[Category:400s| ]]