After World War l the United States stuck with a strict policy of isolationism. The American people didn’t want to be involved in European affairs. Accepting the refugees would’ve been a way for the U.S. to get dragged into the war. We see in the later years after the Imperial Japanese attacked Pearl Harbor where isolationism in the States becomes a distant memory and where the U.S. begins taking position on the world stage.
Since the development of industrial society, more and more jobs were replaced by simple machinery and it focus the spread of job availability to only several areas in united States.This caused the decreasing rate of wages or even employment within the u.s society, and the economic pressure eventually lead to class violence