could be wrong but i believe the answer is the theories of Social Darwinism were often used to justify the efforts of certain political, social, or economic views.
<span>A society (or country) might decide to produce candy or cars, computers or combat boots. The goods might be produced by unskilled workers in privately owned factories or by technical experts in government-funded laboratories. Once they are made, the goods might be given out for free to the poor or sold at high prices that only the rich can afford. The possibilities are endless.</span>
The correct answer is increase in industrialization.
Due to the technological advancements of the mid-late 1800's, Americans started to rely more on industry rather than farming. Working in a factory rather than a farm had its perks. People who worked in a factory had guaranteed wages, whereas in farming the amount of money a person makes is dependent on several different factors like the amount of people who want to buy your products, climate, location, etc.
Answer: Some Nazi scientists were brought to the USA to work with NASA during Operation Paperclip and other Nazi's ended up in Latin America, particularly Argentina though also in Paraguay, Colombia, Brazil, Uruguay, Mexico, Chile, Peru, Guatemala, Ecuador and Bolivia, as well as the United States, Spain and Switzerland.