The ban Preventing_or_letting , occurring Presence in the run-up to the December 1971 war between the countries , had a significant impact Influence on troop movement into the erstwhile East Pakistan , now Bangladesh .

This situation lasted Process_end for an unprecedented length of time and gave rise to Cause_change_of_position_on_a_scale a panoply of colorful and novel activity , including the democratic formation of a provisional government by the prisoners , prisoner marriages Forming_relationships , the creation of indigenous religious ceremonies , a brief flowering of art and culture , and the waging of a large , relatively complex propaganda campaign against the erstwhile authorities .