[T]he United States is the only country in the world that fought […] a horrific war to end slavery. Other nations with large slave populations, such as Great Britain, which had 850,000 slaves in its West Indies islands, Cuba, which had almost 1,000,000, and Brazil, which had at least 3,000,000, ended the deplorable institution with relatively little bloodshed. Even Czarist Russia, with its millions of semi-slaves known as serfs, freed them without a war. Why were the Americans, with a government designed to respond to the voice—or voices—of the people, compelled to resort to such awful carnage?
– Thomas Fleming, A Disease in the Public Mind: A New Understanding of Why We Fought the Civil War (2013)