Question

How did the Northern plains come into existence

Answer 1

The Northern Plain was formed by the deposits brought in by the three major rivers and their tributaries. Alluvium was deposited at the foot–hills of the Himalayas for millions of years. These deposits are now the fertile Northern Plains. Alluvium issoil or sediments deposited by a river or other running water.

Answer 2

Due to the uplift of the Himalayas in the Tethys Sea, the Northern flank of the Indian Peninsula got subsided and formed a large basin. That basin was filled with sediments from the river which came from the mountains in the north and from the Peninsula in the south. Thus an extensive flat land of alluvial soil was formed which is known as the northern plains of India.