Why was the african american population of south carolina's sea islands one of the first to become freedmen during the civil war?

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

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