This major work draws on current archaeological and textual research to trace the spread of Christianity in the first millennium. William Tabbernee, an internationally renowned scholar of the history of Christianity, has assembled a team of expert historians to survey the diverse forms of early Christianity as it spread across centuries, cultures, and continents. Organized according to geographical areas of the late antique world, this book examines what various regions looked like before and after the introduction of Christianity. How and when was Christianity (or a new form or expression of it) introduced into the region? How were Christian life and thought shaped by the particularities of the local setting? And how did Christianity in turn influence or reshape the local culture? The book's careful attention to local realities adds depth and concreteness to students' understanding of early Christianity, while its broad sweep introduces them to first-millennium precursors of today's variegated, globalized religion. Numerous photographs, sidebars, and maps are included.