Baluchistan (Chief Commissioner's Province) in the context of "North-West Frontier Province"

Provincial elections were held in British India in the winter of 1936–37 as mandated by the Government of India Act 1935. Elections were held in all gubernational eleven provinces - Madras, Central Provinces, Bihar, Orissa, United Provinces, Bombay, Assam, North-West Frontier Province, Bengal, Punjab and Sind. No elections were held in the British provinces of Delhi, Ajmer-Merwara, Coorg & Baluchistan and in the princely states.

The final results of the elections were declared on 20 February 1937. The Indian National Congress emerged in power in five of the provinces, Bombay, Madras, the Central Provinces, the United Provinces, the North-West Frontier Province, Bihar, and Orissa. The exceptions were Punjab, Sindh (where it failed to obtain majority), Assam & Bengal (where it was nevertheless the single-largest party). The All-India Muslim League failed to form the government in any province on its own.

The North-West Frontier Province (abbr. NWFP), commonly known as Sarhad (lit. 'Frontier'), was a province of Pakistan from 1947 to 1955 and from 1970 to 2010; and prior, a province of British India from its establishment in 1901 to Pakistan's independence in 1947. It was established from the north-western districts of British Punjab during the British Raj. Following the referendum in 1947 to join either Pakistan or India, the province voted hugely in favour of joining Pakistan and it acceded accordingly on 14 August 1947. It was dissolved to form a unified province of West Pakistan in 1955 upon promulgation of One Unit Scheme and was reestablished in 1970. It was known by this name until 19 April 2010, when it was dissolved and redesignated as the province of Khyber Pakhtunkhwa following the enactment of the Eighteenth Amendment to the Constitution of Pakistan.

The province covered an area of 70,709 km (27,301 sq mi), including much of the current Khyber Pakhtunkhwa province but excluding the Federally Administered Tribal Areas and the former princely states of Amb, Chitral, Dir, Phulra and Swat. Its capital was the city of Peshawar, and the province was composed of six divisions (Bannu, Dera Ismail Khan, Hazara, Kohat, Mardan, and Peshawar Division; Malakand was later added as the seventh division). Until 1947, the province was bordered by five princely states to the north, the minor states of the Gilgit Agency to the northeast, the province of Punjab to the east and the province of Balochistan to the south. The Kingdom of Afghanistan lay to the northwest, with the Federally Administered Tribal Areas forming a buffer zone between the two.

Sind, sometimes spelled Scinde, was a province of Pakistan from 1947 till its amalgamation into West Pakistan in 1955; and prior, a province of British India from being granted provincial status in 1936 till Pakistan's independence in 1947. Karachi was the capital of the province till 1948, succeeded by Hyderabad.

Under the British, it encompassed the current territorial limits excluding the princely state of Khairpur. In 1948, Karachi was separated from the province to form the Federal Capital Territory and serve as the federal capital of Pakistan; this resulted in the provincial capital being shifted to Hyderabad. The province was dissolved alongside Baluchistan, the North-West Frontier Province, West Punjab, and a number of Pakistani princely states to form a unified province of West Pakistan in 1955, upon implementation of the One Unit Scheme.

West Pakistan was the western province of Pakistan between 1955 and 1970, covering the territory of present-day Pakistan. Its land borders were with Afghanistan, India and Iran, with a maritime border with Oman in the Gulf of Oman in the Arabian Sea.

Following its independence from British rule, the new Dominion of Pakistan was physically separated into two exclaves, with the western and eastern wings geographically separated from each other by India. The western wing of Pakistan comprised three governor's provinces (the North-West Frontier, West Punjab and Sind), one chief commissioner's province (Baluchistan) along with the Baluchistan States Union, several independent princely states (notably Bahawalpur, Chitral, Dir, Hunza, Khairpur and Swat), the Karachi Federal Capital Territory, and the autonomous tribal areas adjoining the North-West Frontier Province. The eastern wing of the new country—known as East Pakistan—comprised the single province of East Bengal (which included the former Assamese district of Sylhet and the Chittagong Hill Tracts).

West Punjab was a province in the Dominion of Pakistan from 1947 to 1955. It was established from the western-half of British Punjab, following the independence of Pakistan. The province covered an area of 159,344 km (61,523 sq mi), including much of the current Punjab province and the Islamabad Capital Territory, but excluding the former Princely state of Bahawalpur. Lahore, being the largest city and the cultural centre, served as the capital of the province. The province was composed of four divisions (Lahore, Sargodha, Multan and Rawalpindi) and was bordered by the state of Bahawalpur to the south-east, the province of Baluchistan to the south-west and Sind to the south, North-West Frontier Province to the north-west, and Azad Jammu and Kashmir to the north. It shared International border with Indian state of East Punjab to the east and Indian-administered Jammu & Kashmir to the north-east. It was dissolved and merged into West Pakistan upon creation of One Unit Scheme, in 1955.

The One Unit Scheme (Urdu: ون یونٹ; Bengali: এক ইউনিট ব্যবস্থা) was the reorganisation of the provinces of Pakistan by the central Pakistani government. It was led by Prime Minister Muhammad Ali Bogra on 22 November 1954 and enacted on 30 September 1955. The government claimed that the programme would overcome the difficulty of administering the two non-contiguous, unequal polities of West and East Pakistan separated from each other by more than a thousand miles. To diminish the differences between the two regions, the 'One Unit' programme merged the four provinces of West Pakistan (West Punjab, Sind, the North-West Frontier Province (NWFP) and Baluchistan) into a single province to parallel the province of East Pakistan (now Bangladesh).

The One Unit program met with great resistance and grievances were raised by the four provinces after its establishment. As per scholar Julien Levesque, the One Unit project had mainly been pushed by the Punjabi elite of West Pakistan since 1953 with the aim of preventing politicians from East Pakistan from gaining power at the centre. The National Awami Party successfully sponsored a bill in the National Assembly calling for its dissolution and providing for regional autonomy. This led to the military takeover of the national government. The One Unit programme remained in effect until 1970. Finally, President General Yahya Khan imposed Legal Framework Order No. 1970 to end the One Unit program and reinstate the provisional status of the Four Provinces as of August 1947.