Summarize the string of events that caused much political and social turbulence during the 1860s.support answer with examples ~thank you

To adequately explain the culture and political climate of
the 1860’s you must go back to October 6, 1859 when John Brown raided Harpers Ferry,
Virginia in an effort to free the slaves. Southerners began to fear organized Northern
efforts to undermine their social system. The North was primarily industrial, the South
agricultural.  Most Northerners opposed slavery and Southerners pushed for expansion
into the new territories.  Southerners believed strongly in doctrine of states’ rights. 
Both sides were embroiled in heated and charged political
debate.

The presidential election of 1860 occurred,
therefore, in an atmosphere of great tension. Southerners backed John Breckenridge and
rejected the Stephen A. Douglas the other Democratic candidate.  Abraham Lincoln, a
Republican won the Presidency with 41% of the popular
vote. 

Southerners believed Lincoln to be an abolitionist
even though he had determined not to interfere in slavery where it currently existed. 
In December 1860, in order to prevent the succession of the southern states, Senator
John Crittenden, (D.Ky.) made a proposal extending the Missouri Compromise to the
Pacific and limiting the federal government’s authority over
slavery.

On December 20, 1860 South Carolina votes to
succeed from the United States. Promptly the other southern states followed.  President
Buchanan was unable to prevent the federal forts in the southern states from falling to
the secessionists.  In January 1861, the Crittenden Compromise was defeated and Civil
War began on April 12, 1861.