In ancient Rome, what innovative advertising technique did businesses use to help customers find their shops in busy commercial streets?

Step back in time to explore how ancient civilizations promoted their products and services without modern technology. Before digital billboards, social media, or even printing presses, merchants and artisans still needed to advertise their wares. This trivia explores an unusual advertising method that helped ancient Roman businesses stand out in crowded marketplaces and guide potential customers to their establishments.

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Pictorial signs and carved symbols above doorways that represented their goods or services
Trained parrots that called out to passersby with memorized phrases about the shop's offerings
Colored smoke signals released at regular intervals from shop chimneys
Scented oils sprayed in front of shops to create unique aromatic zones in the marketplace