Lincoln's election was the trigger to the Southern attempt to secede.
Also, I think the assertion that libertarian ideals are had much to do with participation in the Underground Railroad deserves some citation. Participants include free blacks, Native Americans, certain Christian denominations (like Quakers and Wesleyans), and other abolitionists. I don't doubt they share many values with libertarians, but more obvious motivations for each type of participant come to mind than libertarian fervor.
Also, I think the assertion that libertarian ideals are had much to do with participation in the Underground Railroad deserves some citation. Participants include free blacks, Native Americans, certain Christian denominations (like Quakers and Wesleyans), and other abolitionists. I don't doubt they share many values with libertarians, but more obvious motivations for each type of participant come to mind than libertarian fervor.