Owen Wister's "Pentecost of Calamity" is a detailed study of a major natural disaster that forever changed the course of world history. The author examines the events that took place during the First World War and their impact on society and political processes. Wister analyzes in detail the causes of the conflict, its consequences and the response of people to the crisis that has engulfed the world. The book is a kind and valuable source for understanding those disturbing events and their impact on the further development of human history.