I've been playing Sid Meier's Civilization VI and am enthralled by the music. My son, Evan, told me the music for the United States was particularly good, so I gave it a listen. The song chosen is a composition from 1954 by the iconic American composer, Stephen Foster. Wikipedia says:
It was published in New York City by Firth, Pond & Co. in 1854 as Foster's Melodies No. 28. Well-known and popular in its day, both in the United States and Europe, the song asks the fortunate to consider the plight of the less fortunate and includes one of Foster's favorite images: "a pale drooping maiden".
The song became very popular during the Civil War and inspired one rather witty parody entitled, "Hard Tack Come Again No More," I'm putting a link to a recording of this at the end of the post.