Answer: During the Civil War, the Union attempted to blockade the southern states. A blockade meant that they tried to prevent any goods, troops, and weapons from entering the southern states. By doing this, the Union thought they could cause the economy of the Confederate States to collapse. When did the blockade run? The Union blockade began just a few weeks after the start of the Civil War. Abraham Lincoln announced it on April 19, 1861. The Union continued to blockade the South throughout the Civil War until the war ended in 1865.
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