POWER AND PROFIT, a history of commerce in the Middle Ages, focuses on the effects in the 1300s of the previous century's commercial revolution, which saw innovations in banking and credit, manufacturing, transport, and commercial organization. The author, former professor of European history at Cambridge, has compiled his work on trade and commerce in medieval Europe from an unusual collection of sources. Copyright (C) Muze Inc. 2005. For personal use only. All rights reserved.