The dispute over slavery, which had been going on for many years, grew furious in 1850; and its fury increased until, in 1860-61, it culminated in the secession of the Southern States from the union. Some of those who have written the history of the secession movement contend that slavery had little or nothing to do with the matter; that the South seceded because the North had refused to grant her people their rights guaranteed under the Constitution. This is true as far as it goes; but the fact remains, that secession and the war grew out of the efforts of the abolitionists of the North, and those who sympathized with them, to keep slavery out of th............