Answer:
The answer is D. Corn was not typically produced with slave labor, plantation style, in either the Blue Grass or the Nashville Basin during the first half of the 19th century. While corn was an important crop in both regions during this time period, it was primarily grown on small family farms rather than large plantations worked by slaves. In contrast, tobacco, hemp, and cotton were all major cash crops that were produced with slave labor on large plantations in both the Blue Grass and the Nashville Basin.