Who were two famous northern abolitionists?
I'll do you one better and name three: Lysander Spooner, Frederick Douglass, and Elizabeth Cady Stanton.
As the Abolitionist movement spread, many prominent members came to public attention. Freedman of color, David Walker, published 'An Appeal To The Colored Citizens of the World in 1829' pushing abolitionists to political militancy. Frederick Douglass, a former slave and the most famous black man among abolitionists, published the anti-slavery paper 'The North Star' . Sojourner Truth, a black woman made the famous speech 'AinÃ?t I a Woman?' and published 'The Narrative of Sojourner Truth…
To divide the nation further. The Northern Abolitionists saw John Brown as a hero and a liberator (though the Non-Abolitionist majority did not). The South saw him as proof of their suspicions that the Abolitionists were planning to arm the slaves for a revolutionary uprising. After this, there could be no constructive dialogue between the two sections.
How did the aristocratic republicanism of the South differ from the democratic republicanism of the North?
Southern employers depended totally on slavery for their workforce. Most Northern employers (increasingly industrial) would not have been able to use slaves, even if they were offered them. Also Northern puritans disapproved of slavery, and the Abolitionists carried a lot of weight, although most Northerners were not Abolitionists by any means.