Which ancient civilization introduced new luxury products with a ceremonial 'Festival of Wares' where merchants would sail upriver and unveil foreign goods to crowds gathered at temple complexes?

Before modern product launches had press releases and social media campaigns, ancient civilizations had their own methods of introducing new products to the market. From ceremonial unveilings of revolutionary tools to royal announcements of imported luxuries, product launches were significant cultural events that could change societies. Test your knowledge about how ancient civilizations introduced new products and innovations to their marketplaces!

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Ancient Egypt, during the annual flooding of the Nile
The Roman Empire, at the Mercatus Traiani (Trajan's Market)
Ancient China, during the seasonal opening of the Silk Road trading routes
Mesopotamia, at the ziggurats of Ur during solstice ceremonies