This monograph deals with the entrepreneurs, the partnerships they formed and how these partnerships evolved through a time span of about fourteen centuries, that is, from the birth of Islam to the present. The first part of the book examines the evolution of medieval partnership forms in Europe and finally in the United States, while in the second part the much less known Islamic evolution is studied. The study of the Islamic evolution is based on extensive original research conducted in the Ottoman archives. Comparative economic and business historians of these two great civilizations will find this book highly important, while modern Islamic bankers and economists interested in the actual functioning of an Islamic economy will find this volume indispensable reading, for here they have a unique chance to observe an Islamic economy and business operating within an historical framework.