Why was control of the Mississippi River important during the Civil War? Which side ended up with control of the Mississippi River?

Control of the Mississippi River during the American Civil War was an economic and psychological factor for both the North and the South. ... Vicksburg was “the key,” as U. S. President Abraham Lincoln termed it, to the Union gaining control of the river.

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explanation:

the answer wold be b) travel among nations should be regulated by an international organization