The differences in how the war affected each nation, with the US having less destruction and casualties compared to the Soviet Union is your best answer.
Another reason is the fact that they used two seperate types of government, and each tries to impose it's own kind on other countries in an effort to be able to be the "leader of the world".
hope this helps
The treaty of Versailles blamed the Germans for causing the war, even though it was the Austrians who started the war. The answer is that the allied powers blamed The Empire of Germany.
An Automobile should be a possible answer i do hope this helps
