Will award!
the best explanation for the end of free immigration in the 1920s is
a) the recognition that immigrants remitted large sums of money to their homelands undermining the balance of payments.
b) the fear that america would be flooded by immigrants fleeing the war devastated economies of central and eastern europe.
c) the growing realization that free immigration produced a burdensome increase in welfare roles.
d) the growing realization that free immigration undermined the incomes of blacks and women.