This vision of the founders served as a basis for asserting that freedom was a national moral imperative, and that the United States Constitution was an antislavery document.
国父们的这种远见成为了主张自由是国家道德义务的基础，美国宪法是一份反奴隶制的文件。
2
In this view, it was the castigation by Southerners that gradually caused widespread antislavery feeling throughout the North.
在这种观点下，正是南方人的谴责逐渐在北方引起了广泛的反奴隶制情绪。
3
This interpretive framework, which once dominated antislavery historiography, had been discounted by historians for two basic reasons.