I know this is pretty late but Hitler would probably be happy to sell armaments to the UK for hard currency - Nazi issue was their foreign reserves were running low and they were attempting their full rearmament at the same time. By selling the UK war materiel Hitler solves his foreign reserve...
@Viriato has talked about this subject quite extensively. You could have had higher number of settlers in Africa had WWI been avoided though most likely it would have been people settling Libya. Why Libya? Close to Europe, had oil and was sparsely populated at the time. Quite possibly Algeria...
Well, if Utah's TFR is 2.5 and if we assume that 38% of non-Mormons have similar a TFR to the rest of America, then Mormon's TFR must be above 2.5 right?
So presumably Mormons are having more children than non-Mormons.
I think its possible they could shoot for 3 TFR and achieve it in the late 20th century.
I guess the question to ask is how do groups such as Hasidic Jews or Mormons maintain high birthrates in a modern economy?
Utah has a birthrate of 17.4 live births per 1000 people (with its high Mormon population at 62%) despite the fact that it is fully integrated within the modern US economy...
Unless you're actually going to have an actual apartheid scenario with 10-20% of the population being Jewish and lording it over the remainder, this is a non-starter.
A strong, parsimonious King could have probably avoided the French revolution - this may mean no American revolution if our hypothetical "Frederick William I" of France decides it would overstretch the treasury. Definitely gone would be the Naval works at Cherbourg Harbour, which sucked up a ton...
Comet strike on Northern Europe?
The Enlightenment Era political revolutions and reforms are not successful and reactionary regimes come to power in America, Britain, Germany and France?
This is a hard PoD.