Merchants and merchant networks operated in open-air and public markets in the ancient world: Babylonia and Assyria, China, Egypt, Greece, India, Persia, Phoenicia, and Rome. There, merchants and traders congregated, usually in the town’s center. Trading and exchanges involved direct selling through permanent or semi-permanent stall-holders and shop-keepers, or through door-to-door direct sales via merchants or peddlers.
In the Roman world, local merchants served the wealthier landowners’ needs, who could call them directly from their farm-gates. Both Greek and Roman merchants also engaged in long-distance trade, as evidenced by Roman objects found in China as early as 226 CE.
During the Middle Ages, England and Europe witnessed a rapid expansion in trade and the rise of a powerful and wealthy merchant class. By the 12th century, there was an upsurge in the number of market towns and larger centralized merchant circuits. While the Crusades helped open up new trade routes in the Near East, Marco Polo stimulated interest in the far East in the 12th and 13th centuries. Consequently, medieval merchants began to trade in exotic and luxury goods such as spices, wine, food, furs, silk, glass, and jewelry.