What mood does the setting of the raven create

Melancholic perhaps.The narrator is sad because of the loss of his beloved one.He tries to concentrate in reading to forget his sorrows but he cannot.He is alone.Loneliness after such a loss surely indicates nostalgia and melancholy .there is a lamentation also so the mood is gloomy as usual in Poe.

faithful servants eumaeus and philaetius:

his ragged vest then drawn aside disclosed the sign conspicuous, and the scar exposed: eager they view'd, with joy they stood amazed with tearful eyes o'er all their master gazed:

these servants know ulysses by the scar he got when he was a child - so when he showed them the mark, they immediately knew this is truly their master and they hugged him, finally starting to believe his words.

it would be offer because the group is offering all at once.