What was the first state to secede from the Union?

Answer: South Carolina

Ah yes, the Palmetto State. The people of South Carolina decided that they were done arguing about free states and slave states and became the first state to secede from the Union on December 20, 1860. A few months later, on this day in 1861, South Carolina troops fired the first shots of the Civial war on Union troops in Fort Sumter. 

Wiki - South Carolina was a source of troops for the Confederate army, and as the war progressed, also for the Union, as thousands of ex-slaves flocked to join the Union forces. The state also provided uniforms, textiles, food, and war material, as well as trained soldiers and leaders from The Citadel and other military schools. In contrast to most other Confederate states, South Carolina had a well-developed rail network linking all of its major cities without a break of gauge. Relatively free from Union occupation until the very end of the war, South Carolina hosted a number of prisoner of war camps. South Carolina also was the only Confederate state not to harbor pockets of anti-secessionist fervor strong enough to send large amounts of white men to fight for the Union, as every other state in the Confederacy did.

Other states quickly followed South Carolina's lead and seceded as well. Mississippi, Florida, Alabama, Georgia and Louisiana left the nation the following month, and Texas seceded on Feb. 1, 1861. The final four to secede did not do so until after the attack on Fort Sumter, but Virginia, Arkansas, North Carolina and Tennessee all seeded by June 8.

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