One reason is that say someone is on bed rest/in the hospital not allowed to move, it can make them very week and make it very hard for them to walk again.
The answer would be "I see these sights".
Hope this helped :).
Answer:
What happens is Poe implies incestuous relations sustained the genetic line and that Roderick and Madeline are the products of extensive intermarriage within the Usher family. In the end, both houses “die” at the same time: Madeline falls on her brother, and the mansion collapses.
Explanation:
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