Answer: The entire poem is an extended metaphor, or figurative language that implies comparison between seemingly unlike things, for the United States after the Civil War and Abraham Lincoln's assassination. In the metaphor, the captain is Lincoln, the voyage is the war and the ship is the United States.
Yes, one should make sure that the subjects and verbs agree
Perceives? Recessive? could be one or the other
D : the structure of "Gumption" is sequential, while the structure of "To Build a Fire" is problem & solution.