An Irrepressible Conflict [1860- 1865]
The conflict between opposing and enduring forces can no longer be restrained, forcing the United States to become either entirely a slave-holding nation or entirely a free nation.
South Carolina secedes| December 1860
Fort Sumter| April 1861
Antietam|September 1862
Emancipation Proclamation |January 1863
The Battle of Gettysburg|July 1863