Book excerpt: Slavery in the Black Sea Region, c.900–1900 explores the Black Sea region as an encounter zone of cultures, legal regimes, religions, and enslavement practices. The topics discussed in the chapters include Byzantine slavery, late medieval slave trade patterns, slavery in Christian societies, Tatar and cossack raids, the position of Circassians in the slave trade, and comparisons with the Mediterranean and the Atlantic. This volume aims to stimulate a broader discussion on the patterns of unfreedom in the Black Sea area and to draw attention to the importance of this region in the broader debates on global slavery. Contributors are: Viorel Achim, Michel Balard, Hannah Barker, Andrzej Gliwa, Colin Heywood, Sergei Pavlovich Karpov, Mikhail Kizilov, Dariusz Kołodziejczyk, Maryna Kravets, Natalia Królikowska-Jedlińska, Sandra Origone, Victor Ostapchuk, Daphne Penna, Felicia Roșu, and Ehud R. Toledano.