A fair chunk of eastern Asia is made up of the Tibetan Plateau. Lying on the side of the Himalayas opposite of India, the plateau is high in elevation and receives very little rain. It is also an important region for some adherents to Buddhism.
It allowed for irrigation of crops.
It is probably the partition of India which was the division of British and India in 1947 which eventually created two independent dominions, India and Pakistan.
