peninsula. Muslim Spain imported Christian slaves from the 8th century until the Reconquista in the late 15th century. The slaves were exported from the Christian region of Spain, as well as from Eastern Europe, sparking significant reaction from many in Christian Spain and many Christians still living in Muslim Spain. Soon after, Muslims were successful, taking 30,000 Christian captives from Spain. In the eighth century, slavery lasted longer due to "frequent cross-border skirmishes, interspersed between periods of major campaigns". By the tenth century, in the eastern Mediterranean Byzantine, Christians were captured by Muslims. Many of the raids designed by Muslims were created for a fast capture of prisoners. Therefore, Muslims restricted the control in order to keep captives from fleeing. The Iberian peninsula served as a base for further exports of slaves into other Muslim regions in Northern Africa. Ottoman slave trade Slavery was a legal and a significant part of the Ottoman Empire's economy and society. The main sources of white slaves were Ottoman wars into Europe and organized enslavement expeditions in Eastern Europe, Southern Europe, the Balkans, Circassia and Georgia in the Caucasus. It has been reported that the selling price of slaves fell after large military operations. Enslavement of Europeans was banned in the early 19th century, while enslavement of other groups was permitted. Even after several measures to ban slavery in the late 19th century, the practice continued largely unabated into the early 20th century. As late as 1908, female slaves were still sold in the Ottoman Empire. Sexual slavery was a central part of the Ottoman slave system throughout the history of the institution. Spanish slaves in Araucanía In the Arauco War (1550–1662), a long-running conflict between Spanish and Mapuches in Chile, both sides engaged in slavery of the enemy population, among other atrocities. Much like the Spanish had captured Mapuche people, the Mapuches had also captured Spaniards, often women, and traded their ownership among them. Indeed, with the Destruction of the Seven Cities (1599–1604) Mapuches are reported to have taken 500 Spanish women captive, holding them as slaves. It was not uncommon for captive Spanish women to have changed owner several times. As late as in the 1850s alleged shipwreck survivor Elisa Bravo was said to be living as wife to a Mapuche cacique, in what is described as the most brutal forced coexistence resulting in children of "mixed blood". A report dating from