Mohammad Hassan Mirza

Mohammad Hassan Mirza was the last crown prince of the Qajar dynasty, who served as the Regent of Iran from 1924 till 1925, after his brother, Ahmad Shah Qajar, permanently departed from Iran in late 1923. In 1924, he successfully halted Reza Khan's attempt to declare Iran a republic, unifying a parliamentary alliance against the legislative votes required to change Iran's constitution from a monarchy to a republic. The following year, Reza Shah deposed the Qajar dynasty and installed himself as Shah of Iran in 1925, Mohammad Hassan and his family were sent into permanent exile to England.