Final answer:
Nick's interactions with Tom after Gatsby's death are marked by disillusionment and disagreement, as Nick learns of Tom's role in Gatsby's demise, leading to a final confrontation and Nick's decision to leave New York.
Step-by-step explanation:
The interactions between Nick and Tom after Gatsby's death are not explicitly detailed in the text provided. However, if we refer to F. Scott Fitzgerald's novel, The Great Gatsby, we would see that Nick's interactions with Tom post-Gatsby's death are marked by disillusionment and a final confrontation. In the concluding chapter of the novel, Nick encounters Tom in New York and learns that it was Tom who had told George Wilson that the car that killed his wife belonged to Gatsby, essentially sealing Gatsby's fate. Nick is disgusted by Tom's carelessness and his role in Gatsby's death, which leads to the sharp decrease in their interactions. This event also prompts Nick to return to the Midwest, wanting to escape the corrupt atmosphere that Tom represents.