If the question is more focused on the teachings, the similarity between Confucianism and Christianity is the both belief system emphasizes on repecting others. They also look into respecting others. Only Muslim focus on praying five times in a day.
I believe that most of the tension was focused on the threat of nuclear war. One of the main focuses of the Cold War was to amass more nuclear weapons than the other side. This created more pressure than both sides could handle, and it created tons of scenarios where, if not treated differently, could have caused global thermo-nuclear war that could destroy Earth. Both sides wanted to prevent that from happening.
Industry and Wage Labor! The North was much more industrious than the south, with factories and what not, making production much more effective.
What made WWII Different from all other wars. World War 1 was the first war in an industrialized age. New weapons and vehicles were used in this war that had never been used before. With the invention of the plane in 1901 led the way for the plane to be used as a gun ship, light bomber, and heavy bomber.
