Rio has done a splendid job of analysing an extremely intractable source base and providing an interpretation that, without in any way trying to smooth over the inconsistencies and messiness of the evidence, nevertheless makes sense. Her book forces us to rethink narratives regarding the importance of the slave trade for the early European economy ... She has done a tremendous service by giving us a new basis for discussion of one of those elements of social transformation. This study will be an indispensable addition to any and every library (and course bibliography) that includes early medieval history in its remit. Shami Ghosh, Reviews in History sakriti opis