Pakistan formally accepted a new constitution in 1973.
Pakistan . Initially a dominion , Pakistan adopted a constitution in 1956 , becoming an Islamic republic . In 1973 Pakistan adopted a new constitution establishing , alongside its pre-existing parliamentary republic status , a federal government based in Islamabad consisting of four provinces and four federal territories . The new constitution also stipulated that all laws were to conform to the injunctions of Islam as laid down in the Quran and Sunnah .