What if World War I never took place between 1914-1918, and instead took place sometime in the 1920s? I imagine that by this time, Franz Ferdinand would have already taken the throne as Kaiser of Austria-Hungary. Would there still be a Russian Empire? How would differently would Woodrow Wilson's presidency have gone without the war and the Paris Peace Conference? Would Warren G. Harding, Calvin Coolidge, Herbert Hoover, etc. be the presidents of the 1920s as OTL, or presidents that are less isolationist?