context: Persian philosophy, literature, medicine, astronomy, mathematics, and art influenced Islamic civilization. The origin of Iranian identity despite foreign rule in the centuries that followed. [13] Persian culture was also adopted by the Ghaznavids, [14] Seljuks, [15] [16] [17] and Timurids [18] before the emergence of the rule of the Safavid dynasty in 1501, [19] which made the Shi'a Jaafari school of thought [20] the official doctrine of their empire to put that An important turning point in Iranian and Islamic history. [21] Within the framework of the Persian Constitutional Revolution, the first parliament was established in 1906, as part of the constitutional monarchy. After the 1953 coup (which was instigated by Britain and the United States), Iran gradually became a more authoritarian country. The growing opposition to foreign influence reached its climax during the Islamic revolution that led to the creation of an Islamic republic on April 1, 1979. [22] [23]
question: When did the regime in Iran turn into an Islamic Republican?
answers.text: April 1, 1979