Why was it Vicksburg the key to the unions Anaconda plan?

Vicksburg was a strategic stronghold on the Mississippi River, making it crucial for the Union's Anaconda Plan, which aimed to blockade and control the Confederate states. Capturing Vicksburg would split the Confederacy in two and allow the Union to gain control of the entire river, facilitating the movement of troops and supplies. The successful siege of Vicksburg in July 1863 not only achieved these objectives but also significantly boosted Union morale and support for the war effort. Thus, Vicksburg was pivotal in the Union's strategy to suffocate the Confederacy economically and militarily.