Final answer:
Abraham Lincoln's position in the Lincoln-Douglas debates was that a divided nation could not stand, and the nation would eventually be completely free or completely slave. He opposed the extension of slavery and interpreted the Dred Scott decision and Kansas-Nebraska Act as efforts to nationalize slavery.
Step-by-step explanation:
The man whose position is described in the question is In the Lincoln-Douglas debates of 1858, Lincoln claimed that a divided nation could not stand and believed that the nation would eventually be either completely free or completely slave. He opposed the extension of slavery and interpreted the Dred Scott decision and the Kansas-Nebraska Act as efforts to nationalize slavery. Lincoln asked voters to decide whether to support freedom or slavery.