[tbw2]

Wonder if this is what brought down Rome for good.

[Jimmy Valentine]

Wonder if this is what brought down Rome for good.
No. It was the loss at the battle of Manzikert which empowered the Ottomans and the sacking of Constantinople by crusaders that fatally weakened Byzantium.
By the way, an excellent treatment of Byzantium on U Tube is John Romers Byzantium. Worth watching.