'Ethiopia has long been regarded as "one of the world's greatest and oldest centres of domesticated seed plants"'. This book discusses when, how and why food production developed in Ethiopia. It begins with questions and problems, and ethnographic research, and goes on to detail the origins of domesticated resources, palaeoenvironmental evidence, subsistence intensification, prehistoric contact as apossible mechanisms for the introduction of domesticates, and a speculative model for prehistoric subsistence change.