If you had five slaves and a good piece of land in Alabama in 1820, you might very likely have fifty slaves and a hell of a lot more land a decade later.

820年,如果你在阿拉巴马州,拥有五个奴隶和一块肥沃的土地,十年后你很可能就会拥有五十个奴隶,以及更多的土地

耶鲁公开课 - 美国内战与重建课程节选