Answer: While the South was pleased that the decision affirmed slaves as "property" they feared that, once elected Lincoln would reverse the decision and decided to secede.
Explanation:
The Dred Scott Decision was unwelcomed by abolitionists, who feared it would be a precedent to the spread of slavery. Therefore, the Republican party recovered the determination to grow political power.
The tension between North and South grew, and many southern states decided to secede from the Union to create the Confederate States of America. When Lincoln was elected as President of the United States, South Carolina immediately seceded.
End of Roman monarchy and the establishment of the Republic.
Mainly because it toughened-up the Fugitive Slave Act, allowing official slave-catchers to hunt down runaways.
This recruited many new Abolitionists, and caused Harriet Beecher Stowe to write 'Uncle Tom's Cabin'.
