What is a concept that is supported by social darwinism

About how many european immigrants were processed at the facilities on ellis island

Which of these statements describes a long-term impact of european imperialism in africa? a. african countries joined together to present a united front against imperialism. b. europeans paid african countries after colonizing them, offering these new countries a fresh start. c. european powers drew the current borders, splitting ethnic groups among modern countries. d. africans became more loyal to their countries than to their ethnic groups.

Which of these events was a severe setback for the u.s. war effort in the pacific?