Social Darwinists believe in “survival of the fittest”—the idea that certain people become powerful in society because they are innately better. Social Darwinism has been used to justify imperialism, racism, eugenics and social inequality at various times over the past century and a half.
The SALT I agreement in 1972 brought about the regulation of Soviet production of missiles that carried nuclear weapons. The correct option among all the options that are given in the question is the last option or option "D". SALT I was the reason behind the creation of Anti-Ballistic Missile Treaty.
How did American industry contribute to the war effort? American industry shifted production from consumer goods to war materials. They began making war materials. New war materials were needed and men left for war so their jobs were now available.
The war's effects were varied and far-reaching. The war decisively ended the depression itself. The federal government emerged from the war as a potent economic actor, able to regulate economic activity and to partially control the economy through spending and consumption.