I might be wrong but I'm trying. Italy had this something called the Congress of Vienna and the end of Napoleonic rule in 1871.
Answer:
the separation or isolation of a race, class, or ethnic group by enforced or voluntary residence in a restricted area
*actual dictionary definition of segregation, also applies to this situation
Answer:
Higher wages
Explanation: This question is attempting to explain the reasons for migration. Push and pull factors play a role in the decision of human beings to leave one place or country and migrate elsewhere.
I think it would be C. Not sure thought get a second opinion