Few events, if any, in the modern era have had more impact than the Holocaust. This four-volume landmark study, with over a hundred contributions from leading scholars in the field, represents the most wide-ranging effort in decades to grapple with the catastrophe. The collection is united by three central aims: presenting a thorough analysis of the Holocaust, reviewing its vast, multilingual historiography, and rendering visible its impact on the post-war world. Volumes examine the origins and preconditions of the Holocaust, its policies and participants, the victims, bystanders, and helpers, and finally its outcomes and repercussions.