BIMARU is an acronym formed from the names of the states of Bihar, Madhya Pradesh, Rajasthan and Uttar Pradesh. It was coined by demographer Ashish Bose in the mid-1980s as the BIMARU states collectively scored low on the Human Development Index. The present-day states of Chhattisgarh, Jharkhand and Uttarakhand were part of Madhya Pradesh, Bihar, and Uttar Pradesh, respectively, when the BIMARU acronym was coined. All of these are in the Hindi Belt, which also has the relatively richer states of Haryana, Himachal Pradesh, Delhi, Chandigarh, and Uttarakhand. The acronym has also been used as a pejorative for the people originating from these states.