They both agreed that Popular Sovereignty was an incredibly flawed concept.
The Germans blamed the Great Depression on the German Jews and repressed them severely while the Japanese suspended democracy and came under the dictatorhip of Emperor Hirohito and both countries promoted wars of aggression and ended up being defeated by the Allies. The US on the other hand, under FDR developed government infrastructure building programs to keep the Americans employed and then entered WWII and helped defeat the German, Italian and Japanese fascists on the battle field.
There’s a lot of these you need to learn to learn the other thing so that’s why there’s a lot you need to learn to be successful
2 plus 2 is 4 minus 1 thats 3 quick maths