To begin, it didn't promote "peace" as much as it promoted a "cold war" which is the whole point of the name, Cold War.
Nuclear Weapons essentially forced the US and the Soviet Union into an uncomfortable draw.
They knew they couldn't fight each other directly so they fought each other in a series of devastating proxy wars around the world.
It would help if you added the options...
This is D so yeah haha hello cutie :)
The gentry was the highest class, they could vote. then there was also the middle class and finally the poor.
Hope this helps!
D Although the U.S. had ramped up its industry during the first world war, it still did not have its full industrial capacity maximized until 1942 during world war 2. It was not "the" world leader in industry, however it was on the top of the list