Kinda late. If you look at the North's strategy, you'll see that from almost the start they deploy a multi-pronged attack. They bottle up the southern ports along the Atlantic and Gulf Coasts. They attack and hold coastal areas in Florida. They attack in Texas. They attack down through TN, and are constantly (more or less) besieging Richmond and south of Richmond. I really don't think that the South had enough manpower to do that.
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