It closed the new territories to southern slaveholders.

VOA: special.2009.03.26

What he meant was they were the charges put in the world for slaveholders to care for, and if possible, even to protect and perfect.

他的意思就是,奴隶是世界留给奴隶主来管理的财产,如果可能的话,还应保护和完善他们

耶鲁公开课 - 美国内战与重建课程节选

There were approximately 400,000 slaveholders, white slaveholders, in the American South by 1860.

截至1860年,美国南部,大约有四十万白人奴隶主

耶鲁公开课 - 美国内战与重建课程节选