<Li> Constantine III: 409--411 . <Ul> <Li> Constans II: 409--411 . </Li> </Ul> </Li> <Ul> <Li> Constans II: 409--411 . </Li> </Ul> <Li> Constans II: 409--411 . </Li> <Li> Constantius III: 421 . </Li>

What was the capitol of the roman empire