Page "Missionary" Paragraph 25

Initially, the spread of Islam came through the dawah efforts of Muhammad and those who followed him.

After his death in 632, much of the expansion of the empire came through conquest, such as that of North Africa and later Spain ( Al-Andalus ), and the Islamic conquest of Persia putting an end to the Sassanid Empire and spreading the reach of Islam to as far East as Khorasan, which would later become the cradle of Islamic civilization during the Islamic Golden Age and a stepping-stone towards the introduction of Islam to the Turkic tribes living in and bordering the area.