South Berubari was an integral part of independent Bangladesh. In 1974 under the India-Bangladesh Border Demarcation treaty Bangladesh transferred sovereignty over South Berubari to India. In order to make the handover absolute government passed third amendment to the Bangladesh Constitution. On the contrary India did not carry out her treaty obligation. This article is intended to find out the reasons led the then Bangladesh government to surrender sovereignty over South Berubari to India, constitutional sanction behind the transfer, and the achievement of the people of Bangladesh after her compliance with treaty obligation. Keywords: Awami League, India, South Berubari, Dahagram and Angarpota, Exchange, Sovereignty, Territory