How did naval superiority affect the course of the Civil War?

A
The Union navy was able to intercept and defeat British ships sent to relieve their Confederate allies in the war’s final battle.

B
The Confederate navy was able to intercept and defeat British ships sent to relieve their Union allies in the war’s final battle.

C
After the Union established an effective naval blockade, the Confederacy was cut off from trade with Europe.

D
After the Confederacy established an effective naval blockade, the Union was cut off from trade with Europe.

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