What kind of metaphor does Frederick Douglass use to describe a nation?

Douglass finishes the extended metaphor of nations as rivers by employing auditory, visual, and tactile imagery with the words “howl,” “abyss,” and “wind.” Such language helped the audience hear, see, and feel this metaphor and sense his pessimism as he likens the decline of nations to the drying up of rivers.

Explanation:

both believe in many god or polytheism

both built temples that they worshiped in both civilization's god were humanoid

both groups made religion a large portion of their lives

both believe in one religion throughout

the dead were buried with items for the afterlife