Final answer:
In 'The Cast of Amontillado,' Montresor's deep-rooted hatred for Fortunato is fueled by a series of insults endured by Montresor, leading Montresor to seek revenge.
Step-by-step explanation:
In 'The Cast of Amontillado,' the hatred between Montresor and Fortunato stems from a series of insults endured by Montresor. The story does not explicitly state the specific insults, but it suggests that Fortunato has inflicted a thousand injuries upon Montresor.
Montresor's desire for revenge grows when Fortunato insults him, leading to Montresor vowing to seek vengeance.
This intense hatred between them is conveyed through dialogue and sensory details. For example, Montresor's quote, 'The thousand injuries of Fortunato I had borne as I best could, but when he ventured upon insult, I vowed revenge,' shows how the insults crossed a line for Montresor and fueled his desire for revenge.
Sensory details, such as the setting in the catacombs and the wine sparkled in Fortunato's eyes, contribute to the overall atmosphere of tension and darkness in the story.