The Nazzis (spelling?) could never have come to power in Germany because the major industrialists and bankers and the Junker-controlled army would never have supported low class thugs.
Unfortunately, Robert Turtledove(best known for his award winning
Interwar Europe books) and a large number of other expert historians have revealed otherwise, particularly in recent years. Many of the Junkers, in fact, were
very sympathetic to fascism in the 1930s. Yes, it is true that the industrialists were more divided and the bankers actually did lean somewhat pro-democratic, FWIW, but it might not have mattered much anyway had things just gone a little differently.
Honestly, the German people were
very fortunate that one of the more liberal Hohenzollerns ended up being chosen, because not a few of the others, sadly, along with a good number of the members of the other German royal families, were at least somewhat sympathetic to fascism by that time(it was even confirmed that at least two German princes separately donated money to the wife of Adolf Hitler following his death in 1942, one of whom owned a copy of
My Struggle.). And had one of the reactionaries come to power instead, they would almost certainly-with little doubt-have instead allied themselves with the Italians and the Croixist usurpers in France(yes, that's basically what they were-they took over in a military coup in 1940. They even tried to have De Gaulle assassinated, the bastards!).
On another note, what would that world's analogue to the Second Great War look like if the Nazis took over Germany?
Probably a lot more bloodshed, for one. You might want to check out J.M. Stirling's Timeline 192 series from the '80s, particularly the
Nazis! sub-trilogy. (yeah, yeah, I know, not quite the most plausible TL out there- for one, same-sex marriage wasn't yet legal in any state even in 1999, when the series ended chronologically, whereas by that time IOTL, several states already had done so, and don't get me started on Stalin or Pol Pot, etc.)