[NewsyHacker]

Your first link backs up exactly what I mentioned above:

> In antichità, quando si parlava latino, le formule di cortesia non esistevano … L’usanza del Voi nasce insieme a una nuova formula politica: la tetrarchia introdotta nel 293 da Diocleziano.

It was an innovation in Romance that took place centuries after Caesar and most of the Imperial era. Again, there is ample scholarly literature on this, so no need to resort to popular references like encyclopedias.

[lnxg33k1]

Yeah I saw that, but I'd say if that makes sense, that they're attributing the introduction of "Voi" within the roman era and not in the medieval times, right? The second one instead attributes it to "Roma Cesarea", to be fair, it is not the encyclopaedia that attributes it to "Roma Cesarea" but the article that influenced Mussolini quoted on the article on the encyclopaedia, so they're probably only quoting, but I don't know enough, so I'd trust you're right, thank you

[NewsyHacker]

Historians today tend to trace the ultimate fall of the Roman Empire to the multiple crises of the third century, even if the name of the empire limped on for a couple of centuries more. So AD 293 is quite a late date, on the threshold to a new era. From the viewpoint of modern historians, it is hard to understand how Italian Fascism could have seen anything that late as worth being proud of and emulating.