The answer would be highway
C. United Nations. At the end of WW2, The US thought about world peace. So did other nations. So United Nations was formed. The headquaters is in New York.
The correct answer is B: Immigration was based on the national origins quota system. The National Origins Act was a United States federal law that set the amount of immigrants from certain countries that were allowed to enter the U.S. Admission to the U.S was determined by ethnic identity and national origin. It reduced the number of southern and eastern Europeans and excluded Asians entering the country.