Okay, but that's all of history. One thing leads to another. The problem is, you can't say what would have happened if things went differently.
Would there have been no Nazi party if World War I never happened? Was Hitler's rise to power in part due to his experiences in World War I and the economic crisis Germany was put in due, in part, to World War I? We have no way of knowing.
Maybe if Victoria and Albert hadn't married, World War I would still have happened, but been even worse because there would have been even greater enmity between the British and the Germans. We can't know. The best we can do is write speculative fiction.