Answer:
<u>indifference to each other</u>
Explanation:
One may ask; What are adverbs? Put simply, an adverb is a word that modifies or describes a verb, sentence, or adjective.
Hence, by using such adverbs the narrator is able to describe the indifference (verbs; actions) found among the dwellers.
Despite the historical focus, many elements of the story are fictitious. I think that should be right