In the 1920s, which pioneering advertising technique first systematically used psychology to convince consumers they 'needed' products they previously considered luxuries?

Before digital campaigns and social media influencers, advertising underwent revolutionary changes that shaped how products reached consumers. This trivia question explores a pivotal moment in advertising history that transformed retail marketing strategies and created the foundation for modern consumer culture. Test your knowledge about how historical advertising techniques changed the retail landscape forever.

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Edward Bernays' 'engineering of consent' campaigns linking products to unconscious desires
P.T. Barnum's circus-style promotional events and grand spectacles
J. Walter Thompson's newspaper coupon distribution networks
Montgomery Ward's illustrated mail-order catalog distribution system