<P> In contrast, the Constituent Assembly of India, which had more diversity, took less than two and a half years to draw up the Constitution of India . The Indian constitution was promulgated on January 26, 1950, and first general elections were held in 1952 . </P> <P> The Constituent Assembly of Pakistan was dissolved on October 24, 1954, by Governor General Malik Ghulam Muhammad . The dissolution was challenged by the president of the assembly in the notable case of Federation of Pakistan v. Maulvi Tamizuddin Khan, in which the federal court took the side of the governor general, in spite of dissent from one judge . Mohammad Ali Bogra was the Prime Minister of Pakistan at the time . </P> <P> The second Constituent Assembly reconstituted on May 28, 1955 . The constitution was promulgated on March 23, 1956, and Pakistan became an Islamic republic . On October 7, 1958, martial law was imposed on the country . The new regime abrogated the constitution, declaring it unworkable . </P> <P> After coming to power, Zulfikar Ali Bhutto invited the leaders of the parliamentary parties to meet him on October 17, 1972, which resulted in an agreement known as the' constitutional accord', after an intensive discussion . As per consultations floated by the PPP, the National Assembly of Pakistan appointed a 25 - member committee, on April 17, 1972, to prepare a draft of the permanent constitution of Pakistan . Mahmud Ali Kasuri was the elected chairman of the committee . On October 20, 1972, the draft bill for the constitution was signed by leaders of all parliamentary groups in the National Assembly . A bill to provide a constitution for the Islamic Republic of Pakistan was introduced in the assembly on February 2, 1973 . The assembly passed the bill nearly unanimously on April 10, 1973 and it was endorsed by the acting President Zulfikar Ali Bhutto on April 12, 1973 . The constitution came into effect on August 14, 1973 . On the same day, Bhutto took over as the prime minister and Choudhary Fazal - e-Elahi as the president . On July 5, 1977, General Zia staged a military coup and suspended the constitution, which was restored in 1985 . Similarly, when General Musharraf took over in 1999, the constitution was suspended for several years . </P>

When did the national assembly approved the first constitution of pakistan