Answer:
capture of the Mississippi River, splitting the Confederacy in two
Step-by-step explanation:
May 1863
Confederate General Pemberton:
held the high ground & had a strong defensive position:
July 4, 1863
after several failures & long siege, Grant captured Vicksburg
major turning point : Union controlled entire Mississippi River : cut the Confederacy in half & denied them a vital supply route.
boosted Union morale
gave President Abraham Lincoln a much-needed victory,
war had not been going well for the Union up to that point.
key part of the Union's overall strategy