The North Eastern USA especially around the big cities
As factories began then there was mass production making business more product faster and allowing sell rates to skyrocket since they were able to make so much more products using machinery instead of by hand one by one
It would be "b. Benito Mussolini" who was the fascist leader known as Il Duce, since this is Italian for "the Leader," and Mussolini had almost complete control of the Italian state.
Responding to xenophobic concerns, Congress passed an emergency law restricting immigration in 1921. Among other provisions, the Act established a quota (a proportional share of a total) for nationalities on the basis of their numbers in the U.S. in 1910.
The missing detail is: a quota.
