Alright, I'm working on a TL and I'm kind of stuck due to my lack of knowledge on European politics during WWI. In my TL, WWI persists a few extra years as an extremely bloody stalemate, with neither side gaining any ground, as a result of the US not entering the war. What I'm stuck on is all of the governmental collapses. During and shortly after WWI, the Ottoman, Austria-Hungarian Empires collapsed; and Russia and Germany succumbed to revolution. I'm trying to determine if they would have followed a similar course in my TL. Please help! The future of my timeline is at stake.