Which ancient civilization invented the world's first known retail 'shopping mall' structure with multiple specialized vendors in a single building?

Before modern shopping malls and online stores, ancient civilizations developed sophisticated commercial systems that laid the groundwork for today's retail practices. From Mesopotamian marketplaces to Roman shopping complexes, these early innovations revolutionized how goods were traded, displayed, and sold. Test your knowledge about the fascinating retail innovations that emerged thousands of years ago and shaped commerce for millennia to come.

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Ancient Rome (Trajan's Market, circa 100 CE)
Ancient Egypt (The Grand Bazaar of Thebes)
Ancient Greece (The Agora Megacomplex)
Babylonian Empire (The Gardens of Commerce)