1. Eastern Plains Region: Extension - The region situated east of the 50 cm rainfall line in Rajasthan is known as the Eastern Plains Region. This region is formed by rivers, which is why it is called a river basin or region.

2. The eastern plain is mainly divided into three parts.

- Chambal River Basin

- Banas River Basin

- Mahi River Basin

1. The oldest evidence of plowing the fields has been found from Kalibanga.

2. It is situated on the banks of Ghaggar (Saraswati) river in Hanumangarh district of northern Rajasthan.

3. Kalibanga was excavated in 1960 by B.B. Lal and B.K. Thapar had started it.

4. Evidence of farming is found from Kalibanga, which is the oldest in the world.

5. Evidence of fire altars are found in a row on a raised platform made of raw bricks.