 Complete the following phrase:  The 1921 Persian coup détat  refers to several major events which led to the establishment of the Pahlavi dynasty as Irans ruling house in 1925. Irans parliament amended the 19061907 constitution on December 12, 1925, replacing the 17971925 Qajar dynasty with the Pahlavi dynasty as the legitimate sovereigns of Iran. The revolution was followed by the 