It was the last major Confederate garrison on the Mississippi.
After Grant captured it, the Confederates were denied all use of the great river, and the war in the West was effectively over, releasing Grant and Sherman for service in the Central and Eastern theatres.
Gettysburg and Vicksburg was important because it showed that the Confederates could not invade the North.
Vicksburg
Vicksburg is on both the Mississippi and Yazoo Rivers.
Victory at Vicksburg secured control of the Mississippi Valley for the Union.
There was no captain named Vicksburg in the civil war, so no person of that name could have been important to the union or anybody else. Perhaps you are thinking of the battle of Vicksburg, which was critical.
Vicksburg is the most important Union victory.
the importance of Mississippi River is more touristic for the Vicksburg.
It was a huge battle that took place there
Grant did not become famous because of Vicksburg, but it certainly greatly enhanced his reputation.
Vicksburg is a city within the state of Mississippi. An important city that is located 60 miles northeast of this location is Redwood Mississippi.
You probably mean the battle of Vicksburg, in the American Civil War. According to http://www.answers.com/topic/battle-of-vicksburg, the capture of Vicksburg marked the turning point of the war.
Gettysburg and Vicksburg