Let's say you're somebody from an ATL looking at the entire history of OTL.
Which parts of it would you consider to be absolutely ASB?
Should a little village of farmers in the Italian peninsula be able to rise to the point of conquering most of the known world?
Should a prophet in the deserts of Arabia be able to create a religion that spreads to a significant portion of the planet's population in just a few hundred years?
Should a corporal in the Austrian army be able to become a charismatic political leader who leads Germany to, albeit temporarily, control almost all of mainland Europe?