Volume II documents and analyses genocide and extermination throughout the early modern and modern eras. It tracks their global expansion as European and Asian imperialisms, and Euroamerican settler colonialism, spread across the globe before the Great War, forging new frontiers and impacting Indigenous communities in Europe, Asia, North America, Africa, and Australia. Twenty-five historians with expertise on specific regions explore examples on five continents, providing comparisons of nine cases of conventional imperialism with nineteen of settler colonialism, and offering a substantial basis for assessing the various factors leading to genocide. This volume also considers cases where genocide did not occur, permitting a global consideration of the role of imperialism and settler-Indigenous relations from the sixteenth to the early twentieth centuries. It ends with six pre-1918 cases from Australia, China, the Middle East, Africa, and Europe that can be seen as 'premonitions' of the major twentieth-century genocides in Europe and Asia.

Volume I offers an introductory survey of the phenomenon of genocide. The first five chapters examine its major recurring themes, while the further nineteen are specific case studies. The combination of thematic and empirical approaches illuminates the origins and long history of genocide, its causes, consistent characteristics, and the connections linking various cases from earliest times to the early modern era. The themes examined include the roles of racism, the state, religion, gender prejudice, famine, and climate crises, as well as the role of human decision-making in the causation of genocide. The case studies cover events on four continents, ranging from prehistoric Europe and the Andes to ancient Israel, Mesopotamia, the early Greek world, Rome, Carthage, and the Mediterranean. It continues with the Norman Conquest of England's North, the Crusades, the Mongol Conquests, medieval India and Viet Nam, and a panoramic study of pre-modern China, as well as the Spanish conquests of the Canary Islands, the Caribbean, and Mexico.

Volume III examines the most well-known century of genocide, the twentieth century. Opening with a discussion on the definitions of genocide and 'ethnic cleansing' and their relationships to modernity, it continues with a survey of the genocide studies field, racism and antisemitism. The four parts cover the impacts of Racism, Total War, Imperial Collapse, and Revolution; the crises of World War Two; the Cold War; and Globalization. Twenty-eight scholars with expertise in specific regions document thirty genocides from 1918 to 2021, in Europe, the Middle East, Africa, Asia, and Latin America. The cases range from the Armenian Genocide to Maoist China, from the Holocaust to Stalin's Ukraine, from Indonesia to Guatemala, Biafra, Bangladesh, Cambodia, Bosnia and Rwanda, and finally the contemporary fate of the Rohingyas in Myanmar and the ISIS slaughter of Yazidis in Iraq. The volume ends with a chapter on the strategies for genocide prevention moving forward.