Economic historians Roger Ransom and Richard Sutch have estimated that African-American farmers in the U.S. South worked about 30 percent fewer hours per year after the Civil War than they had as slaves before the Civil War. If after the Civil War, African-American farmers had continued to work these additional hours, their production and income would have been higher, and U.S. GDP would have been higher. Would the farmers' well-being also have been higher as a result of working these additional hours? Does your answer affect how we should interpret changes in U.S. GDP from before the Civil War to after it? Briefly explain.