The name Bihar, came from Vihar, in ancient time, Bodh pilgrimage visted here to study. Nalanda Mahavihara was oldest center of learning. Students from Tibet, China, Korea, and Central Asia visted here. Nalanda flourished under the patronage of the Gupta Empire. Apart from Nalanda, Vaishali, Bodh Gaya, Vikramshila, Gaya having ancient and golden era. vaishali, the birth place of Bhagwan Mahavira and it is the worlds first republic, in the Vajjian Confederacy in around 6th century BCE. Amrapali, was famous for her beauty and dance, she was crowned as Nagar Badhu of Vaishali. Bodh Gaya, where Gautama Buddha is said to have obtained Enlightenment (Bodhimandala) under what became known as the Bodhi Tree. Hindus cames Gaya in pitripaksha to perform pindadanam. Vikramshila was important centres of Buddhist learning, during the Pala empire.
In modern time, Biahr is a state of India. Patna is the capital of Bihar. Bihar having 9 divisions, Patna, Tirhut, Saran, Darbhanga, Kosi, Purnia, Bhagalpur, Munger and Magadh and 48 districts. Hare 44 seats of Lok Sabha(Lower House) and 243 seats for MLA. It is the 12th largest state in terms of geographical size at 38,202 sq mi (98,940 km2) and 3rd largest by population. It is bounded by Uttar Pradesh to its west, Nepal to the north, the northern part of West Bengal to the east, and by Jharkhand to the south. The Bihar divided into two parts by the river Ganges which flows from west to east. At sultanganj Ganga flows from south to north, called uttar bahini( move towards north) Ganga. Devotees of Shiva collect the water from sultanganj and offer to Lord Shiva in Baidyanath dham temple of Deoghar, Jharkhand. Koshi river known as Bihar ka shok(Sorrow of Bihar). Apart from Ganga and Kosi, Gandak(Narayani), Budhi Gandak, Punpun, Falgu, Kamla, Mahananda, Son are other river in Bihar.