Answer: Islamic terminology and history.
Step-by-step explanation:
41. Bedouins, Arab nomadic population.
42.Hijra, the journey of Muhammad and his followers to Medina.
43. Jihad, the struggle in God's way.
44. Caliph, Successor to Muhammad.
45.Sultan, holder of power.
46. Medina, the city of the Prophet.
47.Abu Bark, the first successor to Muhammad.
48.Muezzin, a person who calls to prayer.
49.Ibn Khaldun, Muslim historian.
50.Alhambra, a Muslim place in Spain during the 14th century.