400s
Centuries: 4th century - 5th century - 6th century
Decades: 350s - 360s - 370s - 380s - 390s - 400s - 410s - 420s - 430s - 440s - 450s
Years: 400 401 402 403 404 405 406 407 408 409
Events:
- Constantine III seizes control of the Roman garrison in 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.da:400'erne
de:400er el:Δεκαετία 400 es:Años 400 fr:Années 400 ko:400년대 it:Anni 400 pt:Década de 400 ro:Anii 400 sl:400. uk:400-ті zh:400年代