In O Captain! My Captain!, What irony concerning Lincoln’s death does the shift in tone emphasize?

Which pair of uses of figurative language from “the caged bird” support the extended metaphor of freedom versus oppression? back of the wind; floats downstream his wings are clipped; his feet are tied the caged bird sings; the free bird thinks dawn bright lawn; grave of dreams

Add the correct punctuation. along with his son hudson was set adrift in a boat

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