The social Darwinists believed that
a. A sharp distinction had to be made between the biological and social worlds
b. Only a socialist political and social structure would keep humans from destroying themselves
c. More powerful nations had to protect weaker nations
d. Powerful nations were meant to dominate weaker societies
Generally speaking, the social Darwinists believed that "d. Powerful nations were meant to dominate weaker societies," since this was in line with the darwinian view of "survival of the fittest".
