I don't know, this is why I'm having trouble too.
Islam spread from Arabia.
Islam
ISLAM
The religion of Islam.
Islam spread to all corners of the Arab World: North Africa, the Upper Middle East, and Arabia.
Allah Almighty has created the universe. He has divided the earth into different climate zones. Islam has nothing to do with the climate of a particular area. Islam is a universal religion. It is above geographical bounds.
By the way people began to listen to his ideas
trading and science advancement
It spread to places in Saudi Arabia and Syria
Check the map. Islam was created in, and spread from, Arabia. Those countries closest to Arabia, of which Egypt is certainly one, were the first to feel the weight of Islamic armies.
75 to 100 years
75 to 100 years