Following the demise of the Caliphate and re-emergence of Iranian dynasties such as the Samanids and Buyids, Nowruz was elevated into an even more important event. The Buyids revived the ancient traditions of Sasanian times and restored many smaller celebrations that had been eliminated by the Caliphate. Even the Turkish and Mongol invaders of Iran did not attempt to abolish Nowruz in favour of any other celebration. Thus, Nowruz remained as the main celebration in the Iranian lands by both the officials and the people.