Answer:
<h2>
to emphasize a specific idea in the poem</h2>
Explanation:
In order to know more about the answer, let's get to know who Walt Whitman is and what "I Hear America Singing" is all about.
Walt Whitman- He is an American poet, essayist and journalist who became part of the transition between transcendentalism and realism. He is often referred to as the <u><em>"Father of Free Verse."</em></u> His style of poetry is very democratic in its outlook.
"I Hear America Singing"- This is a poem written by Walt Whitman. It was published in 1860. It was written on the eve of the American Civil War, a war fought between the northern USA and the southern USA. Despite being written during such time, the poem presents a vision of <em>America as a harmonious community.</em> It celebrates people's different work and lives in one song. It shows that no matter how diverse individuals are, they all come together to a coherent whole.
So, the answer above is <em>"to emphasize a specific idea in the poem"</em> and that specific idea is the unity of all Americans despite moving from the city to the country and the land to the sea.