Dominicans, Muslims and Jews in the Medieval Crown of AragonWith their active apostolate of preaching and teaching, Dominican friars were important promoters of Latin Christianity in the borderlands of medieval Spain and North Africa. Historians have long assumed that their efforts to convert or persecute non Christian populations played a major role in worsening relations between Christians, Muslims and Jews in the era of crusade and reconquista. This study sheds light on the topic by setting Dominican