Before the emergence of Islam, the Arab tribes in the peninsula had a history, which is the days of the Arabs, which are oral accounts that tell the wars of the tribes and the greatness of matters that took place between the Arabs before Islam, such as the day of Parony and Ghabra ... and the war of bassos, etc. Islam and the establishment of its state for religious and worldly reasons; The scholars of Islam recorded the invasions and facts of the caliphate, and they wanted to tell about the ancestral nations referred to in the verses of the Quran, and they sought to know the men who narrated the hadith. On the other hand, it was necessary for Muslims to know the nature of the countries that they conquered, the system of its abscesses, and the ethics of its inhabitants; Which led them to consider the history of nations and peoples.