The Business of IdentityThe Cairo Geniza is the largest and richest store of documentary evidence for the medieval Islamic world. This book seeks to revolutionize the way scholars use that treasure trove. Phillip I. Ackerman Lieberman draws on legal documents from the Geniza to reconceive of life in the medieval Islamic marketplace. In place of the shared practices broadly understood by scholars to have transcended confessional boundaries, he reveals how Jewish merchants in