【单选题】(As long as) poor people, who in general axe colored, are in (conflict with) richer people who in general are (lighter) (skin), there's going to be a constant racial conflict in the world.
【简答题】Long, long ago there were only a few thousand people in the world. These people move form place to place over the land, hunting animals for food. No one knows how or when these people learned about gr...