Bihar and Orissa (बिहार और उड़ीसा) was a former
province of
British India which included the present-day
Indian states of
Bihar,
Jharkhand, and
Orissa. 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. Bihar and Orissa was separated from Bengal in 1912. A number of
princely states, including the
Orissa Tributary States, were under the authority of the provincial governor. In 1936, the province was divided into the provinces of Bihar (which included present-day Bihar and Jharkhand states) and Orissa, and the princely states placed under the authority of the
Eastern States Agency.