The american civil war beacause you cant just search only that up. You will get lots of answers beacuse more than one thing happened then.
Answer:
Out of the Delta
It was initially a folk music popular among former slaves living in the Mississippi Delta, the flat plain between the Yazoo and Mississippi rivers. With the Great Migration of black workers that began around that time the Blues spread around the south and the rest of the United States.Explanation:
The correct answer to go in the blank would be letter choice C) Mixed or the third option because its true.
