What reason might Edgar Allan Poe have included and acirc and 128 and 156The Haunted Palace and acirc and 128 and 157 in and acirc and 128 and 156The Fall of the House of Usher and acirc and 128 a?

Edgar Allan Poe included "The Haunted Palace" as a poem within "The Fall of the House of Usher" to enhance the eerie and foreboding atmosphere of the story. The poem reflects the decline of the Usher family and mirrors the mental deterioration of Roderick Usher. Its themes of decay, madness, and haunting add depth to the overall mood of the narrative.