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Vicksburg is a city located in Warren County, Mississippi.
During the Civil War, Vicksburg was the site of the Battle of Vicksburg, an important battle in which the Union defeated the Confederacy and gained control of the entire Mississippi River.
The battle, also known as the Siege of Vicksburg, consisted of a long siege brought about by the fact that the city is located on a high bluff overlooking the Mississippi River and thus was largely impregnable to invaders.