Why did it take so long to end slavery in the United States, and what did it mean that the nation existed eighty-eight years as a “house divided against itself,” as Abraham Lincoln put it? The decline of slavery throughout the Atlantic world was a protracted affair, but no other nation endured anything like the United States. Here the process took from 1777, when Vermont wrote slavery out of its state constitution, to 1865, when the Thirteenth Amendment abolished slavery nationwide. In this talk, Rael shows how African Americans played the central role in ending slavery in the United States. Fueled by new Revolutionary ideals of self-rule and universal equality—and on their own or alongside abolitionists—both slaves and free blacks slowly turned American opinion against the slave interests in the South. Secession followed, and then began the national bloodbath that would demand slavery’s complete destruction.