Administration in Bihar Bihar and Orissa Province was created separating from Bengal Presidency. In 1936, Bihar and Orrisa Province divided into two new provinces: Bihar Province and Orissa Province. Following Divisions were included in Bihar and Orissa Province when it separated from Bengal Presidency in 1912: On 1 April 1936 Bihar and Orissa Province was divided into two new provinces: Bihar Province and Orissa Province In 1936, Bihar became a separate province including part of Jharkhand. After the independence of India in 1951, Bihar including Jharkhand had 18 districts, and had 55 districts in 1991. In 2000, Bihar again divided into two states:
Geography of Bihar which was part of Bihar until 2000 but now is part of a separate state called Jharkhand. Bihar has notified forest area of 6,764.14 km², which is 7.1 per cent of its geographical area. The sub Himalayan foothill of Someshwar and Dun ranges in Champaran district another belt of moist deciduous forests. These also consists of shrub, grass and reeds. Here the rainfall is above 1,600 mm and thus promotes luxuriant Sal forests in the favoured areas. The hot and dry summer gives the deciduous forests. The most important trees are Shorea Robusta (Sal), Shisham, Cedrela Toona, Khair, and Semal.