Which of these was a notable product failure in Ancient Rome that was heavily promoted but quickly abandoned by consumers?

Before modern market research and product testing, ancient civilizations had their share of commercial failures too! Some innovative products and trade ventures from antiquity simply didn't catch on with consumers of their era, despite significant investment from merchants and artisans. Test your knowledge about these fascinating ancient product failures that time has nearly forgotten.

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Garum Perfume - a luxury fragrance made from fermented fish sauce that was marketed to elite women
Glass Togas - transparent ceremonial garments that were promoted as the 'next evolution' in senatorial fashion
Mesopotamian Scrolling Tablets - clay tablets with rotating mechanisms meant to store more information than standard tablets
Egyptian Solar Boats - commercial passenger vessels powered by complex mirror arrays that focused sunlight for propulsion