https://en.wikipedia.org/wiki/Fall_of_the_Western_Roman_Empire
https://en.wikipedia.org/wiki/Western_Roman_Empire
https://en.wikipedia.org/wiki/Byzantine_Empire
https://www.history.com/news/8-reasons-why-rome-fell
https://www.britannica.com/place/Roman-Empire/Height-and-decline-of-imperial-Rome
https://en.wikipedia.org/wiki/Roman_Empire
https://en.wikipedia.org/wiki/Commodus
https://en.wikipedia.org/wiki/Year_of_the_Five_Emperors
https://en.wikipedia.org/wiki/Aurelian
https://en.wikipedia.org/wiki/Diocletian
https://en.wikipedia.org/wiki/Constantine_the_Great