The one that would not contribute to the structure of Longfellow’s poem would be repetition of phrases. So, C.
<span>maniac, madman, madwoman, imbecile, psychopath, psychotic; fool, idiot;eccentric; informalloony, nut, nutcase, nutjob, head case, psycho, moron, screwball, crackpot, fruitcake, fruit loop, <span>loon</span></span>
Its C. Significant world event.
I think you should read it yourself
