Which ancient Roman retail innovation became so successful that its slogan 'Caveat Emptor' (let the buyer beware) is still referenced in modern business law?

Before modern corporate logos and slogans, ancient civilizations had their own retail giants and brand strategies. Merchants in ancient marketplaces developed distinctive symbols, reputations, and even early forms of customer loyalty programs. This trivia explores how ancient civilizations approached commerce and created recognizable 'brands' that stood the test of time. Test your knowledge about the retail strategies that helped certain merchants rise above their competition thousands of years ago!

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The Forum Vinarium wine authentication seals, which guaranteed quality imports from specific regions
The Tabernae Argentariae banking system, which introduced the concept of merchant credit accounts
The Forum Romanum auction houses, which established legal standards for disclosing product defects
The Via Sacra loyalty tokens, which offered discounts to returning customers at affiliated shops