John Browns views changed the North-South relations between 1859 and 1863 because the South would now fear the Norths abolition of slavery because of the peoples agreements with Browns means and ends.
The reactions to John Brown's raid at Harper's Ferry, including complete condemnation from Southern advocates of slavery, criticism of his violent methods but support in principle from moderates in the North, and adoration from radical opponents of slavery in New England show a clear example of the increasing tension over the issue of slavery between the North and South.
Thesis: The reaction from the north and south to John Brown's Attack on Harper's ferry, from support to rage, showed the variety of opinions towards slavery, opinions that would eventually merge to form only two, for and against, opinions personified by the two sides of the Civil War.
From the attack by John Brown on Harpers Ferry in 1859 until the Civil War period of 1863 changing relations between the North and the South, fueled by controversy over slavery and its expansion, affected the forming of the Union and the Confederacy through Southern secession and the preservation of the Northern Union.