Something I was wondering a few days ago was if a Central Powers victory in 1918 would still result in a reduction in the number of monarchies in Europe? I don't know if the disestablishment of certain monarchies was directly related to the war or not.
I mean, of the victors, by 1918, Britain was the only monarchy left (America, France and Russia were all republics). But would Europe still move along the path towards republics as OTL?