Trying to plant such an oligarchy in the midst of what was otherwise the world's most successful republican regime was no small task, and it required… - Allen C. Guelzo

[W]hat Reconstruction succeeded in doing: it helped us avoid a renewed outbreak of civil war (which, considering the history of civil conflicts, is no small achievement); it laid the legal and constitutional foundations for a more egalitarian America, foundations that it took only sixty-five years to revitalize into the Civil Rights Movement; it restored the original balance of constitutional federalism, putting aside the states’ rights absolutism of the pre-war Southern aristocracy. But I do not say this to encourage any historical Pollyannaism about Reconstruction. That restored federal balance permitted the emergence of the first women’s voting rights legislation, the curtailing of municipal corruption, and the introduction of widespread public schooling; it also permitted the emergence of Jim Crow. But as Lincoln said, “this is a world of compensation.” The historical good and the evil, even in Reconstruction, do not come unmixed.

People today often want to separate slavery, and say that Lincoln was interested in preserving the union and not in destroying slavery. No, that gets it exactly wrong. The two are as knotted together as a rope, because the only union worth preserving is a union that has abjured slavery. So for Lincoln to get rid of slavery is to purge America of the aristocratic poison. He once said that slavery was the one retrograde institution that was poisoning the American republic, keeping the American republic from realizing its full potential.

At the end of the Civil War, the "Slave Power" had been destroyed, free-labor Republicanism was triumphant, and the freed slave was poised on the verge of assuming an equal place in American society with every other citizen. Fifteen years later, the one-time slaveholders were back in control of the South, free-labor Republicanism was coping with the first stresses of mass industrialization in its own Northern backyard, and the freedmen were consigned to an economic peonage that offered little practical improvement on enslavement. It began to seem that a great opportunity had been bobbled away.