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Defused a four-year political confrontation between slave and free states regarding the status of territories acquired during the Mexican–American War
Answer:B
Explanation:The Battle of Gettysburg fought on July 1–3, 1863, was the turning point of the Civil War for one main reason: Robert E. Lee's plan to invade the North and force an immediate end to the war failed. ... The collision of two great armies at Gettysburg put an end to that audacious plan