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What role did control of the Mississippi River play in the Civil War?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Map of the United States showing the Mississippi River and its major tributaries flowing south from Minnesota to the Gulf of Mexico. A shaded area marks the Mississippi River basin, and New Orleans is labeled near the river's mouth.
Mississippi River

Control of the Mississippi River was a central objective of Union strategy during the American Civil War, serving as a critical component of the Anaconda Plan. This grand strategy aimed to suppress the rebellion by blockading Southern ports and executing a decisive thrust down the river to isolate and strangle the Confederacy.12

The river functioned as a vital artery for Southern communication, commerce, and logistics, linking the Confederate states of Louisiana, Texas, and Arkansas to the eastern Confederacy. By securing the river, the Union sought to sever these connections and deny the South access to essential agricultural resources.13

Key milestones in this effort included:
* New Orleans: The capture of this port in April 1862 by David Farragut provided the Union with a foothold on the lower river.34
* Vicksburg: As the key Confederate stronghold, Vicksburg resisted multiple attempts at capture until Ulysses S. Grant and David Dixon Porter successfully besieged the city. Its surrender on July 4, 1863, effectively split the Confederacy in two and marked a major turning point in the war.134