What developments deepened the divisions between North and South?

1793 The invention of the cotton gin, creating the southern cotton empire

1828 south Carolina refuses to pay the important tariffs, invoking states rights

1848 California acquired - too big to meet the terms of the Missouri Compromise

1850 California admitted as a free state - concessions offend Abolitionist

1852 "Uncle Toms Cabin" published in protest against Fugitive Slave Act

1854 Kansas allowed to vote on slavery - terrorist intimidate voters

1857 Dred Scott verdict - Supreme Court is protected by law

1859 John Brown captures Government arms and tries to stir up a slave rebellion

1861 Lincoln rejects last compromise because it would allow extension of slavery