On the fall of Fort Sumter President Lincoln ordered a blockade of the Confederate seaports. There were few manufacturing industries in the South. Cotton and tobacco were the great staples of export. If her ports were blockaded the South could neither bring in arms and military supplies from Europe, nor send cotton and tobacco to Europe to be sold for money. So her power of resisting the Union armies would be greatly lessened. The Union government bought all kinds of vessels, even harbor ferryboats, armed them, and stationed them off the blockaded harbors. In a surprisingly short time the blockade was established. The Union forces also began to occupy the Southern seacoast, and thus the region that had to be blockaded steadily grew less.

As months and years went by, and the blockade became stricter and stricter, the sufferings of the Southern people became ever greater. As they could not send their products to Europe to exchange for goods, they had to pay gold and silver for whatever the blockade runners brought in. Soon there was no more gold and silver in the Confederacy, and paper money took its place. Then the supplies of manufactured goods, as clothing and paper, of things not produced in the South, as coffee and salt, gave out.