What events would have to take place socially, politcally and economically for the Roman Empire to survive united for far longer than in OTL?
Can't think of the name of the book, or the author.
What events would have to take place socially, politcally and economically for the Roman Empire to survive united for far longer than in OTL?
Well, preventing the invasion of the Huns (and thus the Great Migration) would help a lot.
However, the East-West division already was a fact at that point.