Between 1931 and 1949, a series of crises threatened world order and the very functioning of states, as well as destroying or changing millions of ordinary people’s lives. At the heart of these upheavals was an all-encompassing war that was a watershed moment in modern history. Collapse tells the story of the first part of this "Greater Second World War,” from 1931-1941, weaving multiple international trends, theatres of war and home fronts into a single, compelling global narrative.