It’s not the main focus of the show, but prejudice is touched upon in several episodes. I wonder if the original book did too? Expected is the Christian notion of saving the local savages (Indians) and indoctrinating them into civilized society. Just a comment, not up for debate in this particular forum.
Separate from prejudice, in the same episode, one of the characters come down with Sepis. The writing assumes the patient will die, but my quick reading of the subject indicates that most people survive Sepsis and 60% survive septic shock if it worsens to that. However, this story was in the time before antibiotics and maybe that’s the difference.