Freedom- the poem is describing Abraham Lincoln and the freedom of slaves. "The poem says rise up and hear the bells" and it also says "the prize we sought is won"
Word Choice- The author uses words like Captain as a figure like Abraham Lincoln, he also uses the word rack to describe that they have been through violent changes like war, and lastly he uses the word ship referring to our country
Imagery- The poem includes descriptive writing such as "O the bleeding drops of red, where on the deck my Captain lies. fallen cold and dead."
The author uses repetition in his poem like "O captain my captain!" at the beginning of each stanza and he repeats at the end of each stanza "Fallen cold and dead"
The author uses imagery and repetition to state that someone important has died in our history