Put them in order please. They need to be in order of events.

Answer:
Romen empire weakened
Romen empire falls
last, is Justinian became emperor
and constauction of constantinople began
Explanation:
so first the Romen empire was weakened then it fell and the byzantines came up after the Romens and Constantinople was thier capital so the order would be
Romen empire weakened
Romen empire falls
last, is Justinian became emperor
and constauction of constantinople began
I got some info from this site
https://en.wikipedia.org/wiki/List_of_Byzantine_emperors#:~:text=Traditionally%2C%20the%20line%20of%20Byzantine%20emperors%20is%20held,by%20the%20later%20emperors%20as%20the%20model%20ruler.