The enslaved population of medieval Iberia composed only a small percentage of the general populace at any given point, and slave labor was not essential to the regional economy during the period. Yet slaves were present in Iberia from the beginning of recorded history until the early modern era, and the regulations and norms for slavery and servitude shifted as time passed and kingdoms rose and fell. The Romans brought their imperially sanctioned forms of slavery to the Iberian peninsula, and these were adapted by successive Christian kingdoms during the Middle Ages. The Muslim conquest...