Which pioneering advertising technique of the 1920s revolutionized product marketing by creating artificial consumer needs rather than simply addressing existing ones?

Advertising has evolved dramatically throughout history, transforming from simple notices to sophisticated campaigns that shape cultural movements. The techniques used to market products have reflected societal values, technological advancements, and economic conditions of their times. This trivia question explores a pivotal moment in advertising history that fundamentally changed how products were marketed to consumers and established practices that continue to influence modern digital marketing strategies.

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Scientific Advertising by Claude Hopkins, which introduced systematic market testing
Edward Bernays' 'Engineered Consent' approach, which linked products to subconscious desires
The AIDA model (Attention, Interest, Desire, Action) developed by St. Elmo Lewis
Rosser Reeves' Unique Selling Proposition (USP) concept for product differentiation