Meghna is an important river in South Asia, one of the three rivers responsible for creating the largest delta on earth, most of which is The Peoples Republic of Bangladesh ( Bangla: গনপ্রজাতন্ত্রী বাংলােদশ) is a country in South Asia that forms the eastern part of the ancient region of Bengal. Bangladesh (বাং... Bangladesh. Meghna originates from the hilly regions of eastern India, and flows through Bangladesh, meeting the river Padma near Chandpur, Bangladesh. The joint river is known as Meghna and ultimately falls into the Bay of Bengal near Bhola, Bangladesh.