What I am trying to say is that the "Rome Never Falls" cliche (I should remember this topic for Trope Talk) focuses more on both halves of the Roman Empire staying united and never falling. That being said, what if the Western Roman Empire managed to stick it out alone? You get a scenario and map like the one below by Bruce Munro called "Western Rump (or The Roman World in 771 AD)":
Vandal invasion of North Africa failed and thus the Westerns Romans managed to hold off the barbarians long enough to reestablish themselves in Carthage in a bit of historical irony. Today Western Rome's greatest strength is its navy and while they have friendly relations for the time being with the Eastern Romans, no one is interested at the moment in bringing the band back together.
I like this scenario because it keeps the Western Romans around without turning the timeline into another Roman Wank. Rome is a powerful force, but its not the only player in the region. Bruce also didn't ignore the butterflies and I like what he did with the Arabs, Khazars and Roman Britain. As for the map itself, well if you don't like the Munroist style by now there is nothing else I can really say to change your mind.
Honorable mention this week goes out to "The Upper Country" by False Dmitri.
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Matt Mitrovich is the founder and editor of Alternate History Weekly Update, a blogger on Amazing Stories and a Sidewise Awards for Alternate History judge. When not writing he works as an attorney, enjoys life with his beautiful wife Alana and prepares for the day when travel between parallel universes becomes a reality. You can follow him on Facebook, Twitter and YouTube. Learn how you can support his alternate history projects on Patreon.