Explanation

Pak Prime Minister Mr. Z.A. Bhutto visited Bangladesh from 27-29 June 1974.

Zulfiqar Ali Bhutto was 9th prime minister of Pakistan. 

Pakistan Peoples Party was launched on November 30, 1967 by Zulfiqar Ali Bhutto.

REASON OF THE ZA BHUTTO BANGLADESH VISIT

Bangladesh, June 2E —Prime Minister Zulfikar Ali Bhutto of Pakistan publicly apologized,  for what he called the

“shameful repression and unspeakable crimes”

committed in Bangladesh by the Pakistani Army before the eastern part of Pakistan gained independence in December 1971.

while 

Pak Prime Minister Benazir Bhutto paid a visit to Bangladesh from 1-3 October 1989.