The northern states disliked slavery and wanted to see it abolished;a few of the southern states believed slavery to be essential to their agrarian economy.

• 他们必须克服彼此之间某些严重的歧见:北方各州不喜欢奴隶制度而想废除它，一些南方的州相信奴隶对他们的农耕经济至为重要；