Answer:
Madeline is near death, while Roderick's sensitivity (or possible hypochondria) prevents him from leaving the house, ensuring the end of their line.
Explanation:
So it affect the plot maybe making the plot unfinished or not being able to pay the workers so it's important to the development of the plot.
An encyclopedia would be the source to look for the Salem witch trials, because an atlas is a collection of maps, a dictionary is used for word definitions, and a thesaurus is used for synonyms !
Hope this helps
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Repetitive because that word means continues