Bihar Bihar Bihar (; ) is an Indian state considered to be a part of Eastern and Northern India. It is the thirteenth-largest Indian state, with an area of . The third-largest state by population, it is contiguous with Uttar Pradesh to its west, Nepal to the north, the northern part of West Bengal to the east, with Jharkhand to the south. The Bihar plain is split by the river Ganges, which flows from west to east. Bihar is an amalgamation of three distinct regions: Magadh, Mithila, and Bhojpur. On 15 November 2000, southern Bihar was ceded to form the new
Provinces of Portugal its beginning, a policy of regionalisation of the country, which was written into the 1933 Constitution, creating new provinces, within an executive body, the "juntas de provincia" () and a deliberative body, the "conselhos provinciais" (). Created in 1936, the new provinces did not correspond to the traditional "comarcas" or "provinícias". The new territories were based on studies made by Amorim Girão, a geographer, who divided continental Portugal into 13 ""regiões naturais"" (). The provinces were: These eleven provinces corresponded each to one of the natural regions developed by Amorim Girão, with two exceptions: the natural regions of Trás-os-Montes and