Well, if WWIV hadn't happened.....
..... England, Norway, Nippon and all the other small places that were neutral during the Final War Of The Caliphates wouldn't be so dominant in the world today
.... we might have had 400 years of global warming if the war hadn't wrecked everything.
..... then the Space elevator that the Zanzibar Calpihate had started to build would have been completed.
..... The Grand Palace of Europe would still be standing at Tours, just as it once did, to commemorate the great Arab victory there over Charles Martel.
But it seems so implausible. Once the Industrial Revolution took off 600 years ago, and Baghdad tested the first nuclear device two centuries after that, world wars were bound to happen...