In 1970, the then-President of Pakistan, General Yahya Khan, enacted a series of territorial, constitutional and military reforms. These established the , state parliament, as well as the current provisional borders of Pakistan's four official provinces. On 1July 1970, West Pakistan was abolish under the Legal Framework Order of 1970, which dissolved the One Unit policy and restore the for provinces This order had no effect on East Pakistan, which retained the geopolitical position established in 1955. The following year saw a major civil war erupt between Pakistan and Bengali nationalists in East Pakistan. After a full-scale military intervention by India in support of the Bengali Freedom-fighters and Pakistan's subsequent defeat, the exclave of East Pakistan seceded from its union with the Islamic Republic of Pakistan as the new People's Republic of Bangladesh.