Hasidism is one of the most important religious and social movements to have developed in Eastern Europe, and the most significant phenomenon in the religious, social and cultural life of the Jewish population in Eastern Europe from the eighteenth century up to the present day. Innovative and multidisciplinary in its approach, Hasidism: Key Questions discusses the most central features of any social or religious movement: definition, gender, leadership, demographic size, geography, economy, and decline. This is the first attempt to answer those central questions in a single volume.