The answer is Naturalist fiction.
Answer:
Writers probably stayed away from everyone else and also might have stayed inside. I don't know who exactly it was but people probably didn't create the painting until after the plague. They probably just imagined what the plagues would have been like. Some people survived because they either lived somewhere else or something else like that. Famous People who have died from Bubonic Plague (Yersinia pestis) infection: 429 BC - Pericles - Greek Statesman. 251 - Hostilian (Gaius Valens Hostilianus Messius Quintus) (Roman Emperor 251 AD) (251 AD) 664 - Saint Cedd (Missionary Bishop, Northumbria).
Most of my answers are probably wrong, so sorry if they are
Hope this helps!
Have a nice day!
so the reason why an author would expand all that is because of history we had to know everything about the history of the Americas so we had the right religion we where before anything happens and we also had to know how they behaved to see how we had improved