Answer:
The Siege of Vicksburg in 1863 saw to the US's completion of the Anaconda plan's part A, which was to split the Confederacy into two parts, which weakens their overall command armies, and allowed the US with her superior weapons and larger army to defeat the Confederate forces easier. Part B saw to the total completion of the naval blockade which strangled the Confederate's economy even more. Without being able to sell their renown cotton, they were not able to obtain funds to purchase foreign military goods for their war effort.