As a Northerner commenting on Southern culture, how did Frederick Law Olmsted illustrate the concept of 19th-century American regionalism in this passage from The Cotton Kingdom? A. By suggesting that all Southerners possessed certain negative traits
B. By noting that the presence of slavery had an impact on free workers
C. By describing the hypocrisy inherent in the South's racist worldview
D. By implying that Northern slaves were more hardworking than Southerners