Give an account of the 4 divisions of Himalayas from west to east along with Purvanchal hills respectively.

Himalayan Mountains lie in the north of India which runs from Indus River to Brahmaputra River in a west-east direction. From west to east they can be divided into four divisions:

Punjab: The part of the Himalayas lying between Indus and Satluj rivers is called Punjab Himalayas. It is also known as Kashmir or Himachal Himalayas.

Kumaon: The Himalayas east to Punjab Himalayas lying between Satluj and Kali rivers is called Kumaon Himalayas.

Nepal: The Himalayas east to Kumaon Himalayas lying between Kali and Tista rivers is called Nepal Himalayas.

Assam: The Himalayas east to Nepal Himalayas lying between Tista and Dihang Rivers is called Assam Himalayas.

Purvanchal Himalayas is also known as the Eastern Mountains. It is a sub-mountain range of Himalayas. These Himalayas lie in the Northeast and south of Brahmaputra River. It includes five major hills- Patkai hills, Barail range, Manipur, Mizo, and Naga Hills.