In the Introduction, we define a coup d’état as the unconstitutional replacement of the incumbent executive by military officers or civilians supported by the armed forces, an act that is often accompanied by the suspension of civil guarantees and liberties as well as the nullification of legislative power. We then provide an overview of the economic underpinnings of twentieth-century Latin America and describe the main characteristics of the Cold War in the subcontinent (from the role of the US to the impact of Cuba’s integration into the socialist bloc, from the changing role of the military as an institution to the Doctrine of National Security). We examine the role of the Catholic Church, one of the key actors during this period, in political stability. We close by offering two possible ways to read this book, taking advantage of the comparative framework that its structure offers. Our collective goal in this volume is to explain the end of an era – the Cold War – that conditioned the subcontinent’s transition to democratic regimes, regardless of whether subsequent governments have slanted neoliberal or neo-populist.