Before revision: The Indo-Gangetic Region and central Indian region consists of the 13 states of Bihar, Chhattisgarh, Delhi, Gujarat, Haryana, Jharkand , Madhya Pradesh, Punjab, Rajasthan, Uttar Pradesh, West Bengal, and Chandigarh.
After revision: The Indo-Gangetic Region and central Indian region consists of the 13 states of Bihar, Chhattisgarh, Delhi, Gujarat, Haryana, Jharkhand , Madhya Pradesh, Punjab, Rajasthan, Uttar Pradesh, West Bengal, and Chandigarh.