Bihar and Orissa Province Bihar and Orissa Province Bihar and Orissa was a province of British India which included the present-day Indian states of Bihar, Jharkhand, and a part of Odisha. The territories were conquered by the British in the 18th and 19th centuries, and were part of the Bengal Presidency, the largest British province in India. On 22 March 1912 both Bihar and Orissa division were separated from the Bengal Presidency as Bihar and Orissa Province. On 1 April 1936 Bihar and Orissa became separate provinces. In 1756 Bihar was part of Bengal Subah of Mughal Empire while Orissa was a different Subah.
Bihar County was established between 1020 and 1050, most probably by Stephen I, the first king of Hungary, or possibly by his successor, Peter. According to a version of a royal charter, issued in 1203, mentioned that "the whole Bihar County" was located partly around Bihar and partly around Zaránd (now Zărand in Romania), suggesting that Bihar County had originally included Zaránd County, or at least its territories north of the river Fehér-Körös. An other version of the same charter also mentioned Békés besides Bihar and Zaránd, implying that Bihar County had also included the lands which developed into the separate Békés