Which innovative advertising technique, first used in 1477, revolutionized product marketing by allowing merchants to reach wider audiences with printed announcements?

Before billboards, TV commercials, and social media campaigns, merchants throughout history developed ingenious ways to advertise their products. From town criers in medieval markets to elaborate trade signs in ancient civilizations, the history of advertising reflects the evolution of commerce itself. This trivia question explores one of the earliest and most influential advertising innovations that shaped how products were promoted to the masses.

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The printed handbill advertisement (created by William Caxton in England)
The illustrated shop sign (developed by Roman shopkeepers)
The public product demonstration (popularized by Persian traders)
The traveling merchant jingle (used throughout medieval Europe)