When and why did the secession begin? What state seceded first?

1 Answer
May 29, 2018

See below.

Explanation:

The secession began on December 20, 1860 as it was the outbreak of the American Civil War of the issue on slavery that ended on May 13, 1865.

The state that seceded first was South Carolina.

For more information, click on the following links:
History - American Civil War Secession