This legislative body has been changing and expanding from a 25-member House of Expediency to the present day, which operates under the name of the Islamic Consultative Assembly with 290 members.
On 17 March 1841 (23 Muharram 1275 AH), a decree issued by Nasser al-Din Shah was published in the newspaper Vaqaye-e-Etefaqiye, dividing the duties of the government between the Ministries of Foreign Affairs, War, Finance, Justice and Public Works, including Mirza Jafar Khan Mushirod Dowleh (an Iranian diplomat who educated in United Kingdom) was nominated as the Speaker of the 25-member House of Expediency, or "Consultative Assembly" for short.
[4] Although this consultative assembly, as its name suggests, was more ceremonial, after several centuries it can be considered a spark of reform in Iran's political structure.
[6] At the same time, the original constitution of Iran was quickly drafted by a group of intellectuals familiar with the West and a number of court officials, and was signed by the Shah in December 1906.
[9] Iranian clerics, especially Sheikh Fazlollah Noori, considered this amendment invalid in terms of compliance with the body of religious law of Islam and objected to it.
The protests led to the formation of a secondary commission consisting of Sheikh Fazlollah Noori, a number of clerics and representatives of Azerbaijan to enforce the constitution in accordance with Islamic law.