Book excerpt: This book explains divergent media system trajectories in the countries in southeast Europe, and challenges the presumption that the common socialist experience critically influences a common outcome in media development after democratic transformations, by showing different remote and proximate configuration of conditions that influence their contemporary shape. Applying an innovative longitudinal set-theoretical methodological approach, the book contributes to the theory of media systems with a novel theoretical framework for the comparative analysis of post-socialist media systems. This theory builds on the theory of historical institutionalism and the notion of critical junctures and path dependency in searching for an explanation for similarities or differences among media systems in the Eastern European region. Extending the understanding of media systems beyond a political journalism focus, this book is a valuable contribution to the literature on comparative media systems in the areas of media systems studies, political science, Southeast and Central European studies, post-socialist studies and communication studies.