Famous scholar Ibn Khaldun described how Banu Hilal and other Arab tribes helped spread the Arab language in areas that had been Berber speaking.
In order to bolster Saddam Hussein's regime during the Iran-Iraq War and promote Saddam's Arabization efforts in Northern Iraq, the construction of the Mosul Dam was important.
However, the Diyala Province and Kifri which were once mainly Turkoman cities have been heavily Kurdified and Arabified.