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In page Merchant:

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Although merchant halls were known in antiquity, they fell into disuse and were not reinvented until Europe's Medieval period.[1] During the 12th century, powerful guilds which controlled the way that trade was conducted were established and were often incorporated into the charters granted to market towns. By the 13th and 14th centuries, merchant guilds had acquired sufficient resources to erect guild halls in many major market towns.[2] Many buildings have retained the names derived from their former use as the home or place of business of merchants:[citation needed]