Mood is the overall feeling that the details in a description add up to
Well I don't see how a synonym would combine short and choppy sentences, so that is going to be my answer.
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The correct answer is "less hopeful".
<span>This is because all the characters in the poem sing as they are doing their work, thus creating the identity of a happy America where the workers enjoy and sing. </span>
<span>If they weren't singing, they would be presented as people with no hope who are doomed to work day in day out for the elite. </span>
<span>This is not something that Whitman supported as he wanted to present America as a joyous place.</span>