February 9, 1861 the south declared itself a new country, the Confederate States of America, with Jefferson Davis its president.
South Carolina seceded on that date.
One month after South Carolina seceded from the union TX, LA, MS, AL, GA, and FL seceded.
The Confederacy
South Carolina seceded from the Union before the Civil War.
Tennesee
South Carolina
January 26, 1861.
Only one state seceded in 1860, South Carolina.
Arkansas seceded from the Union May 6, 1861.
The Union was the North - all the states that had not seceded.
Do you mean who seceded first - from the Union? That was South Carolina. Later one state seceded from the Confederacy, and that was West Virginia.
South Carolina seceded from the Union on December 20, 1860. It was the first state to do so, setting a precedent for other Southern states to follow in the lead-up to the Civil War.