Accession of Mohammad Reza Pahlavi, Shahrivar 25. On this day in 1320 Jalali (1941 CE), Mohammad Reza Pahlavi was formally declared Shah of Iran following the abdication of his father, Reza Shah. The transfer of power occurred during World War II, after Allied forces occupied Iran and political pressure forced Reza Shah to step down. Mohammad Reza Pahlavi, then 21 years old, took the oath of office in the National Assembly. At the time, Iran faced significant political and economic challenges due to the ongoing war and the presence of foreign troops. The succession aimed to maintain political stability and continue the monarchy. After his abdication, Reza Shah went into exile, and Mohammad Reza Pahlavi became the second monarch of the Pahlavi dynasty. This event marked a turning point in modern Iranian history and the beginning of a new era in the country's political structure. Mohammad Reza Pahlavi's reign lasted until 1357 Jalali (1979 CE), during which Iran underwent major social, economic, and political changes. This date was officially designated in the Iranian calendar from 1320 Jalali onward to commemorate the historical significance of Mohammad Reza Pahlavi's accession.
