What did the union do to compete step 3 of the anaconda plan from 1864 to 1865

The Anaconda Plan is the name applied to an outline strategy for suppressing the Confederacy at the beginning of the American Civil War. Proposed by General-in-Chief Winfield Scott, the plan emphasized the blockade of the Southern ports, and called for an advance down the Mississippi River to cut the South in two. Because the blockade would be rather passive, it was widely derided by the vociferous faction who wanted a more vigorous prosecution of the war, and who likened it to the coils of an anaconda suffocating its victim. The snake image caught on, giving the proposal its popular name.

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