"A trailblazer in the field of premodern global history, Andrea here guides readers through the medieval expansion of the 'first Europe' from the fifth to the fifteenth centuries. Ranging from Ireland to Ethiopia, from the Mongol Empire to the so-called New World, Expanding Horizons demolishes any lingering sense that European societies remained isolated from the wider world before the modern age. Complete with maps, excerpts from primary source documents, and suggestions for further reading, this book will be an ideal resource for anyone planning to build a course around themes of global travel, exploration, and colonialism." — Brett E. Whalen, The University of North Carolina at Chapel Hill