This Dust Was Once the Man

This dust was once the man,
Gentle, plain, just and resolute, under whose cautious hand,
Against the foulest crime in history known in any land or age,
Was saved the Union of these States

Walt Whitman

What literary device does this poem include at the end of each line?

Alliteration
Assonance
Consonance
Onomatopoeia
Walt Whitman

Who is "the man" the dust now represents?

The narrator
A criminal
Whitman
Lincoln