Islam as a mode of belief of the Arab peoples existed for several centuries in its original reign of the Near East. But as soon as it had a vigorous expansion, it turned to the "black countries" on the paths of Africa, first North, then South. In its desire to extend to the whole Africa, the conquering march of Islam was not smooth, it experienced many obstacles and wars. The islamization of the world took place because of many wars, but those wars did not always end with the victory of the Muslims, they sometimes led to the decline of the project of Islamization of the whole world.