Administrative units of Pakistan
The administrative units of Pakistan () consist of four provinces (Balochistan, Khyber Pakhtunkhwa, Punjab, and Sindh), two autonomous territories (Azad Jammu and Kashmir, Gilgit-Baltistan) and one federal territory (Islamabad Capital Territory). Each province and territory is subdivided into divisions, which are further subdivided into districts, which are further subdivided into tehsils, or taluka, which are further subdivided into union councils.
West Pakistan
Under the One Unit policy announced by Prime Minister Chaudhry Muhammad Ali on 22 November 1954, the four provinces and territories of western Pakistan were integrated into one unit to mirror the single province in the east. The state of West Pakistan was established by the merger of the provinces, states, and tribal areas of West Pakistan. The province was composed of twelve divisions and the provincial capital was established at Karachi. Later the state capital moved to Lahore, and it was finally established in Islamabad in 1965. The province of East Bengal was renamed East Pakistan with the provincial state capital at Dhaka (Dacca).