Which ancient civilization pioneered a sustainable retail practice by implementing a 'market waste recycling system' that converted organic waste from marketplaces into agricultural fertilizer?

Before modern retail giants and environmental movements, ancient civilizations developed remarkable sustainable practices in their marketplaces and trade networks. These innovations addressed resource scarcity, waste management, and environmental impacts thousands of years ago. Test your knowledge about how ancient societies incorporated sustainability into their commercial activities - some of their solutions might surprise you and even inspire today's retail sustainability challenges!

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Ancient Rome, with their 'stercorarii' collectors who gathered waste from markets to sell to farmers outside the city
Ancient Egypt, with their 'Temple Recyclers' who collected market waste to fertilize sacred garden plots along the Nile
Aztec Empire, with their 'chinampas system' that used market waste to create floating garden platforms in Lake Texcoco
Ancient Greece, with their 'agora composting guilds' who processed market waste for olive grove fertilization