After world war 1, why were conditions ripe for social and political change in russia, but not in the united states

The answer to your question would be , the reason why conditions were ripe for russia is because germany basically almost took over all of russia and the u.s came to because the japs took out peral harbor and that's when they screwed up was when they attacked pearl harbor the unitied states didn't want anything to do with the war and then japan goes and attacks pearl harbor and this is why they lost the war . but the main reason why conditions were ripe for russia and not the u.s is because the u.s didn't get taken over almost. hope this