Texas Subcategories This category has the following 7 subcategories, out of 7 total. Christian texts of the medieval Islamic world (9 P)* Christians in the medieval Islamic world (7 C, 2 P)A Christianity in the Abbasid Caliphate (1 C, 11 P) Christianity in al-Andalus (3 C, 5 P)F Christianity in the Fatimid Caliphate (1 C, 2 P)R Christianity in the Rashidun Caliphate (1 C, 2 P)U Christianity in the Umayyad Caliphate (1 C, 4 P)