Answer:
It would cut the South off from supplies from Louisiana and Texas.
It would give the North control of the Mississippi
Explanation:
Vicksburg was considered to be “the key,” as U. S. President Abraham Lincoln phrased it, to making the Union gain control of the Mississippi river. Lincoln looked at a map of the Mississippi River and saw that its hairpin turn is in front of Vicksburg, which was sitting high on bluffs above the river, boats traveling in both directions were made vulnerable to artillery fire from the Confederate batteries on the line of the shore and high on the bluffs.
With the eventual fall of Vicksburg to Union troops on July 4, 1863, Confederacy lost its final chance in controling the Mississippi River.
The Control of the Mississippi River during the American Civil War was considered as an economic and psychological factor for either of the North and the South. For years, the river served as an important waterway for farmers in the mid-western to ship their goods to the eastern states by way of the Gulf of Mexico. The farmers, together with politicians and merchants, do not confirm with the idea of the closing of the river as a result of Confederate artillery looming along the banks where the “Father of Waters” flowed through the Confederacy.
For Confederacy, the control of the lower Mississippi River was important to the union of its states. The portion of Louisiana which is west of the river in addition to Texas and Arkansas created the Transmississippi which contained the manpower and material that the remaining part of the southern military machine needed.
