Whitman compares America to a group of people singing like a choir. Write one to two sentences ideas this metaphor communicates about America

Whitman wanted to express that America is a country constituted by several parts that make a whole that works well. Each individual of the country doing their part is what forms the nation.

A choir is a group of people in which each one has a part to sing that might not be special on their own but form a harmony when they are sung together,

Whitman's metaphor communicates the idea that Americans are all connected as a group. Everyone may sing his own song, but they all sing together in a united way.