This ground-breaking book brings together scholars from the humanities and social and physical sciences to address the question of how recent work in the genetics, zoology, and epidemiology of plague's causative organism (Yersinia pestis) can allow a rethinking of the Black Death pandemic and its larger historical significance.

An overriding assumption has long directed scholarship in both European and Slavic history: that Kievan Rus' in the tenth through twelfth centuries was part of a Byzantine commonwealth separate from Europe. Christian Raffensperger refutes this conception and offers a new frame for two hundred years of history, one in which Rus' is understood as part of medieval Europe and East is not so neatly divided from West.

With the aid of Latin sources, the author brings to light the considerable political, religious, marital, and economic ties among European kingdoms, including Rus', restoring a historical record rendered blank by Russian monastic chroniclers as well as modern scholars ideologically motivated to build barriers between East and West. Further, Raffensperger revises the concept of a Byzantine commonwealth that stood in opposition to Europe-and under which Rus' was subsumed-toward that of a Byzantine Ideal esteemed and emulated by all the states of Europe. In this new context, appropriation of Byzantine customs, law, coinage, art, and architecture in both Rus' and Europe can be understood as an attempt to gain legitimacy and prestige by association with the surviving remnant of the Roman Empire. Reimagining Europe initiates an expansion of history that is sure to challenge ideas of Russian exceptionalism and influence the course of European medieval studies.

During the Middle Ages, a thriving center for learning and research was Muslim Spain, where students gathered to consult Arabic manuscripts of earlier scientific works and study with famous teachers. One of these teachers was Sa'id al-Andalusi, who in 1068 wrote Kitab Tabaqat al-'Umam, or "Book of the Categories of Nations," which recorded the contributions to science of all known nations. Today, it is one of few surviving medieval Spanish Muslim texts, and this is its first English translation.

Science ('ulum), as used by Sa'id and other scholars of that period, is a broad term covering virtually all aspects of human knowledge. After initial discussions of the categories of nations that did or did not cultivate science, Sa'id details the specific contribution of nine nations or peoples-India, Persia, Chaldea, Greece, Rome, Egypt, the Arab Orient, al-Andalus, and the Hebrews. He includes the names of many individual scientists and scholars and describes their various contributions to knowledge, making his book a significant work of reference as well as history.

By placing medieval sealing practices in a global and comparative perspective, the essays gathered in this volume challenge the traditional understanding of seals as tools of closure and validation in use since the dawn of civilization. Far from being a universal technique, sealing is revealed as a flexible idiom, selectively deployed to mediate entangled identities: the introduction of Buddhism in early medieval China; the Islamization of Sasanian and Byzantine cultures; even the advancement of diplomacy from northern Europe to Indonesia.