Which revolutionary military product, first mass-produced in 1861, was marketed with the slogan "Five shots in rapid succession" and dramatically changed infantry combat during the American Civil War?

Throughout military history, certain product launches have revolutionized warfare and changed the course of conflicts. These technological innovations often provided decisive advantages to the forces that possessed them, reshaping military strategies and tactics. This poll tests your knowledge about a significant military product launch that transformed battlefield capabilities during a critical historical period.

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Spencer Repeating Rifle
Gatling Gun
Henry Repeating Rifle
Colt Navy Revolver