LL.M. Dissertation presented at Georgetown University, Washington. Traces the monetary and financial history of Muslims in medieval times, highlighting institutions and practices. In the second part, describes the evolution of interest-based banking in the U.S. In the last part, introduces Islamic Development Bank (IDB) Jeddah as an interest-free international bank. Explains various types of contracts adopted by the IDB. Legalistic approach. Based on secondary as well as primary sources. Documented.