Crusades
The term "crusade" used in modern historiography at first referred to the wars in the Holy Land beginning in 1095, but the range of events to which the term has been applied has been greatly extended, so that its use can create a misleading impression of coherence, particularly regarding the early Crusades. The term used for the campaign of the First Crusade was "iter" "journey" or "peregrinatio" "pilgrimage". The terminology of crusading remained largely indistinguishable from that of pilgrimage during the 12th century, reflecting the reality of the first century of crusading where not all armed pilgrims fought, and not all who fought had taken the cross. It was not until the late 12th to early 13th centuries that a more specific "language of crusading" emerged. Pope Innocent III used the term "negotium crucis" "affair of the cross" for the Eastern Mediterranean crusade, but was reluctant to apply crusading terminology to the Albigensian crusade. The "Song of the Albigensian Crusade" from about 1213 contains the first recorded vernacular use of the Occitan "crozada". This term was later adopted into French as "croisade" and in English as "crusade". The modern spelling "crusade" dates to c. 1760. Sinibaldo Fieschi (the future pope Innocent IV) used the terms "crux transmarina" for crusades in Outremer against Muslims and "crux cismarina" for crusades in Europe against other enemies of the church. Medieval Armenian term for Crusades — xacˇ‘e˘nkalk‘.
Persecution of Muslims
The coming of the Crusades (starting with the massacre of Barbastro) and similarly entrenched positions on the northern African Almoravids, who took over al-Andalus as of 1086, added to the difficult coexistence between communities, including Muslims in Christian ruled territory, or the Mozarabic rite Christians (quite different from those of the northern kingdoms), and further minority groups. The Almohads, a fanatic north African sect, pushed the boundaries of religious intolerance during their occupation of al-Andalus, affecting also the Jews.
During the expansion south of the northern Christian kingdoms, depending on the local capitulations, local Muslims were allowed to remain (Mudéjars) with some restrictions, while some were assimilated into the Christian faith. After the conquest of Granada, all the Spanish Muslims were under Christian rule. The new acquired population spoke Arabic or Mozarabic, and the campaigns to convert them were unsuccessful. Legislation was gradually introduced to remove Islam, culminating with the Muslims being forced to convert to Catholicism by the Spanish Inquisition. They were known as Moriscos and considered New Christians. Further laws were introduced, as on 25 May 1566, stipulating that they 'had to abandon the use of Arabic, change their costumes, that their doors must remain open every Friday, and other feast days, and that their baths, public and private, to be torn down.' The reason doors were to be left open so as to determine whether they secretly observed any Islamic festivals. King Philip II of Spain ordered the destruction of all public baths on the grounds of them being relics of infidelity, notorious for their use by Muslims performing their purification rites. The possession of books or papers in Arabic was near concrete proof of disobedience with severe repercussions. On 1 January 1568, Christian priests were ordered to take all Morisco children between the ages of three and fifteen, and place them in schools, where they should learn Castillian and Christian doctrine. All these laws and measures required force to be implemented, and from much earlier.