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in North Africa/Southwest Asia The North Africa/Southwest Asia realm has spread itself from the Atlantic shores of Morocco to the mountains of Afghanistan. Sometimes this part of the world is referred to as the Arab world. This realm is one the richest in the worl ....

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.... the death of Muhammad the Prophet the Islam continued to spread. The Arab armies were attacking, invading and conquering different parts of three continents, Europe, Asia and Africa. They converted to their religion wherever they went. About A.D. 700 the Islam reached North Africa and most of Southeast Asia. Centuries later it came to Southern and Eastern Europe, West and East Africa, South Asia and it reached even China about A.D. 1000. This spreading religion is a perfect example of diffusion processes, particularly spatial diffusion. The first center was at Medina in Arabia, but it was moved to Damascus and finally to Baghdad. The Islam w ....