On the recordJanuary 1, 1903
It was a phase of this problem that caused the Civil War; and however much they who marched South and North in 1861 may have fixed on the technical points, of union and local autonomy as a shibboleth, all nevertheless knew, as we know, that the question of Negro slavery was the real cause of the conflict.
Said by
W.E.B. Du Bois
Source
gutenberg.org