The history of “Nobody Knows the Trouble I've Seen” dates back to the early 19th century when “African American” religious music gained a new perspective due to the ongoing Civil War in the United States of America.
The song wasn’t published until 1867 and has several cover versions performed by a host of renowned artists and was adopted and popularized even today.
Learn more about the history of the song at: https://galaxymusicnotes.com/pages/about-nobody-knows-the-trouble-ive-seen