This volume which also appeared as a special issue of Medieval Encounters deals with transformations of the major Eurasian civilizations in the early second millennium CE, and with the question of contrasts, parallels and connections between the different trajectories that took shape during this period. An introductory section discusses the theoretical problems of comparative analysis, with particular reference to formative phases of cultural crystallization. The first main thematic section focuses on European developments. The emergence of Western Christendom as a distinctive civilization is...