Explanation

After the formation of Bangladesh, General Muhammad Yahya Khan handed over power in (West) Pakistan to Zulfikar Ali Bhutto.

Bhutto assumed leadership in December 1971 as the first civilian Chief Martial Law Administrator and later became the Prime Minister of Pakistan.

Zulfikar Ali Bhutto returned to Pakistan on 18 December 1971.

On 20 December, he took over as President and Chief Martial Law Administrator from Yahya Khan.

Bhutto served as President from December 1971 to August 1973.

Bhutto served as Prime Minister from August 1973 to July 1977.