Briefly explain ONE specific historical difference between Richards’s and Nunn and Qian’s interpretations. a) Richards focuses on disease impact, while Nunn and Qian emphasize economic benefits. b) Richards highlights Spanish aggression, whereas Nunn and Qian emphasize indigenous resistance. c) Richards discusses demographic recovery, whereas Nunn and Qian discuss population growth. d) Richards emphasizes cultural depression, while Nunn and Qian focus on the Industrial Revolution.