Explanation:

The Brahmaputra called Yarlung Tsangpo in Tibet, Siang/Dihang River in Arunachal Pradesh and Luit, Dilao in Assam, is a trans-boundary river which flows through Tibet, India and Bangladesh. It is the 9th largest river in the world by discharge, and the 15th longest. With its origin in the Manasarovar Lake region, near the Mount Kailash, located on the northern side of the Himalayas in Burang County of Tibet as the Yarlung Tsangpo River, it flows along southern Tibet to break through the Himalayas in great gorges (including the Yarlung Tsangpo Grand Canyon) and into Arunachal Pradesh (India). It flows southwest through the Assam Valley as Brahmaputra and south through Bangladesh as the Jamuna (not to be mistaken with Yamuna of India). In the vast Ganges Delta, it merges with the Padma, the popular name of the river Ganges in Bangladesh, and finally, after merging with Padma, it becomes the Meghna and from here, it flows as Meghna river before emptying into the Bay of Bengal.