A constitution is an aggregate of fundamental principles or established precedents that constitute the legal basis of a polity, organisation or other type of entity and commonly determine how that entity is to be governed.
The Constitution of 1962 was the fundamental law of Islamic Republic of Pakistan from 8 June 1962 until martial law was declared in 25 March 1969. It was abrogated on 25 March 1969 by President Yahya Khan.
Pakistan became an independent state in 1947. The first document that served as a constitution for Pakistan was the Government of India Act, 1935. The first Pakistani Constituent Assembly was elected in 1947 and after nine years adopted the first indigenous constitution, the short-lived Constitution of 1956. In October 1958, President Iskander Mirza abrogated the constitution. Shortly afterwards General Ayub Khan deposed Iskandar and declared himself president