If coal is so dirty why not find another energy source?

Which of these statements best describes the ambiguity in this excerpt

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.

What changed about odysseus soldiers after they encountered the lotus-eaters ?