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
3 democratic presidential candidates
they created innovative methods of painting. they opposed the church and its orthodox ideas. they encouraged the spread of arts and education.
Public works administration
