The migration the famous home-front story skips: millions of white Southerners and Appalachians, pushed by failing coal and cotton, drove north on U.S. 23 and U.S. 25 to Detroit auto plants, Akron rubber works and Ohio Valley steel towns. They were wanted as workers and scorned as hillbillies, a class and regional prejudice distinct from the racial caste Black newcomers faced, and competition for scarce jobs and rooms helped ignite 1943's violence.
The 7 million figure spans roughly 1940 to 1970, with the wartime surge only the leading edge. Employers' preference for Appalachian whites reflected the era's stereotypes, and the migration created the crowded conditions behind 1943 without migrants being to blame.