Question

which is the longest belt of northen plain​

Answer 1

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Explanation:

Indo-Gangetic Plain

The Indo-Gangetic Plain, also known as the Indus-Ganga Plain and the North Indian River Plain, is a 2.5-million km2 (630-million-acre) fertile plain encompassing northern regions of the Indian subcontinent, including most of northern and eastern India, the eastern parts of Pakistan, virtually all of Bangladesh and ...

Answer 2

Indo-Gangetic belt

The Indo-Gangetic belt is the world's most extensive expanse of uninterrupted alluvium formed by the deposition of silt by the numerous rivers. The plains are flat and mostly treeless, making it conducive for irrigation through canals. The area is also rich in ground water sources.