This subseries of Ancient Judaism and Early Christianity stands in the tradition of the work of Adolf von Harnack, Die Mission und Ausbreitung des Christentums in den ersten drei Jahrhunderten (4th ed., Leipzig, 1924). Each volume focuses on the rise and expansion of Christianity in a specific geographic region of Asia Minor up to the Council of Chalcedon in 451 CE. These monographs take into account all relevant literary and non-literary evidence, paying special attention to epigraphical and archeological material, and document the current state of research.