But I want to give you at least some sense of the development of the pro-slavery argument, the kinds of arguments that were used, how they changed over time, who made the arguments.

但我至少想提供给你们一些,支持奴隶制方的论据,他们曾经用来论证的一些理由,是如何随着时间的推移而改变,又是谁提出了这些理由

耶鲁公开课 - 美国内战与重建课程节选