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During the siege of Vicksburg, the Union army "prevented supplies from entering or leaving". This was a very decisive victory for the Union Army in the Civil War.
The Siege of Vicksburg saw the Union army preventing supplies from entering or leaving.
What happened during the Siege of Vicksburg?
The Union Army under General Grant, blockaded Vicksburg which was under the control of the Confederates in order to force them to surrender.
The Union army refused to let supplies into the city or out of it, and this went on till the Confederate garrison surrendered.
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