Why does the Brahmaputra change its name after entering India?
The Brahmaputra changes its name after entering India because the river is known by different regional names along its course. The river originates in the Tibetan region of the Himalayas, where it is known as the Yarlung Tsangpo or Yarlung Zangbo. It flows eastward across Tibet before turning sharply south near the eastern end of the Himalayas.
When the river enters Arunachal Pradesh, it is known as the Siang or Dihang. After being joined by major tributaries such as the Dibang and Lohit, the river enters Assam, where it is widely known as the Brahmaputra. The different names reflect the river's passage through distinct regions, languages and cultural areas.
The name Brahmaputra comes from Sanskrit and means “Son of Brahma.” The river continues through Assam before entering Bangladesh, where it is known as the Jamuna. It eventually joins the Ganga, known in Bangladesh as the Padma, and the Meghna before flowing into the Bay of Bengal.
Thus, the river does not physically become a different river when it enters India; its regional name changes according to its location and local traditions.