Which ancient civilization invented the first known retail subscription model, where customers pre-paid for regular deliveries of olive oil, wine, and grain from merchants?

Before modern shopping malls and e-commerce, ancient civilizations had sophisticated commercial systems. Their retail innovations laid the groundwork for commerce as we know it today. Many retail strategies we consider modern actually have roots dating back thousands of years. Test your knowledge about the fascinating retail innovations of the ancient world!

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Ancient Phoenicians, who offered monthly shipments to regular customers across their Mediterranean trade routes
Ancient Egyptians, who developed a grain delivery system during the annual Nile flooding season
Ancient Romans, who created the 'tessera' token system for monthly provisions to urban residents
Ancient Chinese, who established silk and spice subscriptions along early versions of the Silk Road