Highlight how it merges with Brahmaputra to form Meghna and formation of the largest delta Sunderbans.
Answer
Ganga is one of the most famous and revered river in India. Ganga forms the part of Himalayan Drainage System.
Ganga originates as Bhagirathi. It extends from Uttarakhand from where it originates until the Bay of Bengal where it meets before passing through Uttar Pradesh, Bihar, Jharkhand and Bengal.
The Tributaries are :
Northern : Gandak, Gomati, Ghaghra, Kosi, etc
Southern : Yamuna, Chambal, Son, etc
When Ganga meets Brahmaputra(called as Jamuna in Bangladesh) in Bangladesh, it is called Meghna and they form the largest delta called Sunderbans.