Changes After 1970
The province of East Pakistan became independent in December 1971 as the new country of Bangladesh. The states of Hunza and Nagar were abolished and their territories merged into the Gilgit-Baltistan in 1974. The Federally Administered Tribal Areas were formed from parts of the North West Frontier Province districts of Peshawar and Dera Ismail Khan in 1975.
The status of the Islamabad area was changed to a capital territory in 1981. The names of two provinces were slightly modified in 1990 - Baluchistan became Balochistan and Sind became Sindh. In 2010, the North West Frontier Province changed its name to Khyber Pakhtunkhwa.
Read more about this topic: Former Administrative Units Of Pakistan