books.google.fr - Trade and commerce are among the oldest, most pervasive, and most important of human activities, serving as engines for change in many other human endeavors. This far-reaching study examines the key theme of trading in world history, from the earliest signs of trade until the long-distance trade systems...http://books.google.fr/books/about/Premodern_Trade_in_World_History.html?hl=fr&id=Ewjeoio1U-QC&utm_source=gb-gplus-sharePremodern Trade in World History