It gave the Union army control of the Mississippi River
It took Grants army six weeks to capture the city of Vicksburg.
The most important battle was Vicksburg - liberating the Mississippi and ending the war in the west. The most important event was the Emancipation Proclamation, because it kept Britain and France from sending aid to the Confederates.
The answer is arguable. I say that politically, Gettysburg was the most important battle. Strategically, Vicksburg was the most important.
The Confederate capture of Fort Sumter was important to the US Civil War because it was the event that led to the US Civil War.
Vicksburg was the last major Confederate stronghold on the Mississippi River because of its strategic location, which allowed control over river traffic and supply routes. Its high bluffs provided a defensive advantage, making it difficult for Union forces to capture. The fall of Vicksburg in July 1863 effectively split the Confederacy, giving the Union complete control of the Mississippi River and a critical victory in the Civil War.
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.
Vicksburg
The Battle of Vicksburg is also called the Siege of Vicksburg
During the American Civil War, Union forces sought in 1862 and 1863 to capture the Confederate stronghold of Vicksburg, Mississippi. Located on high bluffs astride the Mississippi River, Vicksburg was a highly defensible fortress, and its capture proved difficult for the Union troops. Finally in 1863, Vicksburg surrendered after a siege starved them out.
Gettysburg and Vicksburg
Stop cheeting and do your homework
It took Grants army six weeks to capture the city of Vicksburg.
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.
The ending of the Siege of Vicksburg, and liberation of the Mississippi. The Battle of Gettysburg, ending Lee's hopes of invading the North.
The capture of Vicksburg, in which he demonstrated a high degree of creative originality. This ended the war in the West.
Take the city Vicksburg during the Civil War.
The most important battle was Vicksburg - liberating the Mississippi and ending the war in the west. The most important event was the Emancipation Proclamation, because it kept Britain and France from sending aid to the Confederates.