Which group of Americans was most prosperous in the immediate post-World War II period? o African-American domestic workers
O white corporate managers living in suburbs
O migrant farmworkers from Mexico
o immigrant factory workers living in cities

The right answer for the question that is being asked and shown above is that: "more than 20 million." the number of  immigrants that  arrived in the united states between 1875 and 1910 is  more than 20 million. at this time, a lot of people migrated to the united states.