Which innovative marketing technique did Samuel Colt pioneer in the 1850s that revolutionized firearms sales to militaries?

Throughout military history, certain weapons have achieved iconic status not just through their battlefield performance, but through revolutionary marketing and product development strategies. During the American Civil War, one firearms manufacturer employed a groundbreaking advertising technique that forever changed how military hardware was marketed and sold to governments. This poll tests your knowledge of this pivotal moment in military product development history.

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Creating elaborate 'presentation cases' with engraved weapons as gifts for military leaders and heads of state
Establishing the first military trade journals with paid advertisements for his revolvers
Implementing a subscription-based model where armies could lease firearms with regular upgrades
Developing the first battlefield demonstration teams that traveled to active conflict zones