See: Prof. Muhammad Hamidullah Hyderabadi; al-Wasa'iqus Siyasah by Prof. Muhammad, Professor of Paris University. And Ali Ahmadi, Makatibur Rasul.
 Ibn Hisham, AsSirah vol2 p.606
 Subhani, Forogh Abadiyat vol.2 p.214
 The date is according to al-Waqedi and al-Balazeri.
 “The Adventures of Ibn Battutah; a traveller of the 14th century” Trans. By Ross Dunn.
 The first mosque built in Egypt is named after him. Amr Ibn El-Aas mosque is now considered the crown of the mosques (Tajul-Masajid) in Cairo.
 From the beginning of the 19th century. Over the last two hundred years of the colonisation of Africa by European countries there has been a rapid expansion of Christianity in Africa . Today 40% of Africans identify themselves as Christians.
 Main source: http://exploringafrica.matrix.msu.edu/curriculum/lm14/actthree14.html
 Hopfe, Lewis. Religions of the World. New Jersey : Prentice Hall, 1998. curtesy of: http://www.hispanicmuslims.com/andalusia/andalusia.html
 Thimmi; a title for a non-Muslim living in an Islamic state means ‘Protected'.
 Courtesy of http://www.thewaytotruth.org/islam-humanity/rapidspreadofislam.html