Why does the speaker share details about race, friendship, and names in this stanza?

How does the poem's mood and tone change in each of these stages of “o captain! my captain! ” by walt whitman? (i need an answer asap )

Isaw my future flash before me and it did not take me anytime to slow down. i need to replace the words "it did".

Satire can best be defined as the literary form or technique in which and are used to criticize one's vices.