The Farakka Long March Social_event occurred Presence in May 1976 , and was led by Maulana Abdul Hamid Khan Bhashani , demanding Request demolition Destroying of the Farakka Barrage constructed Building by India to divert flow of Ganges waters inside its territory , triggering Causation the drying up of river Padma and desertification of Bangladesh .

To counter Attack the German submarines , the Allies moved Motion shipping into convoys guarded Defending by destroyers , blockades Besieging such as the Dover Barrage and minefields were laid , and aircraft patrols Patrolling monitored Scrutiny the U-boat bases .