In 'Why Did Humans Invent War?', author Jack McDonald embarks on a profound investigation into the origins of organized conflict. This book travels back through history and anthropology to understand when and why our ancestors turned to warfare as a solution. McDonald examines various compelling theories, from competition over scarce resources and territorial disputes to the development of social hierarchies and political power. It's a thought-provoking analysis that questions whether war is an inevitable part of human nature or a learned behavior that can be unlearned, offering readers a deep and critical perspective on one of humanity's darkest inventions.