1. Islam & Christianity

2. Muhammad
Strict MONOTHEISM (Allah=THE God) excluding any understanding of the doctrine of Trinity.
Absolute TRANSCENDANCE of God, excluding any idea of incarnation.
A radical religion based on highly simplified Judeo-Christian principles: 5 pillars (Pilgrimage, prayer, Ramadan, almsgiving, creed).
A religion based on a sacred book, the CORAN, a claimed ultimate 3rd Testament, which is almost written by God Himself, making translation & even interpretation almost impossible.
A highly social & political religion mixing temporal & spiritual powers into a so-called Moslem Islam (community of obedient), emphasizing social & religious bounds & behaviors instead of individuals.

3. Dictation of the Koran … that lasted 20 years

4. The Kabba in Mecca

5. The sudden expansion of Islam
570: Birth of Muhammad - 610: Koran revealed - 622: Hejira towards Medina - 624: Battle of Badir - 630: Kabba instituted : Death of the Prophet - 638: Umar in Jerusalem - 730: Muslims in France !

6. Military victories

8. The battle of Constantinople 718

9. Battle of Constantinople in 718

10. The battles of Poitiers & Tours 732

11. Battle of Poitiers in 732

12. Charles Martel

15. The battle of Vienna 1683
1683

17. The limits of the Ummah today

18. The situation of the Orthodox Church during the Middle Ages
Roman Catholics
Muslims
The situation of the Orthodox Church during the Middle Ages