Which groundbreaking invention was first widely adopted after its inventor demonstrated it by dramatically illuminating the 1893 Chicago World's Fair, creating a spectacle that popularized the technology?

Throughout history, some of the most groundbreaking inventions have been accompanied by equally innovative marketing campaigns that helped them achieve widespread adoption. This poll tests your knowledge about the intersection of revolutionary product inventions and the marketing strategies that made them household names. Can you identify which marketing approach truly launched these game-changing products?

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Alternating current (AC) electricity system by Nikola Tesla and George Westinghouse
Telephone by Alexander Graham Bell
Radio broadcasting technology by Guglielmo Marconi
Motion picture projector by Thomas Edison