Map - East Champaran district (Pūrba Champāran)

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India, officially the Republic of India (Hindi: ), – "Official name: Republic of India."; – "Official name: Republic of India; Bharat Ganarajya (Hindi)"; – "Official name: Republic of India; Bharat."; – "Official name: English: Republic of India; Hindi:Bharat Ganarajya"; – "Official name: Republic of India"; – "Officially, Republic of India"; – "Official name: Republic of India"; – "India (Republic of India; Bharat Ganarajya)" is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is in the vicinity of Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia.

Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago. Their long occupation, initially in varying forms of isolation as hunter-gatherers, has made the region highly diverse, second only to Africa in human genetic diversity. Settled life emerged on the subcontinent in the western margins of the Indus river basin 9,000 years ago, evolving gradually into the Indus Valley Civilisation of the third millennium BCE. By, an archaic form of Sanskrit, an Indo-European language, had diffused into India from the northwest. (a) (b) (c), "In Punjab, a dry region with grasslands watered by five rivers (hence ‘panch’ and ‘ab’) draining the western Himalayas, one prehistoric culture left no material remains, but some of its ritual texts were preserved orally over the millennia. The culture is called Aryan, and evidence in its texts indicates that it spread slowly south-east, following the course of the Yamuna and Ganga Rivers. Its elite called itself Arya (pure) and distinguished themselves sharply from others. Aryans led kin groups organized as nomadic horse-herding tribes. Their ritual texts are called Vedas, composed in Sanskrit. Vedic Sanskrit is recorded only in hymns that were part of Vedic rituals to Aryan gods. To be Aryan apparently meant to belong to the elite among pastoral tribes. Texts that record Aryan culture are not precisely datable, but they seem to begin around 1200 BCE with four collections of Vedic hymns (Rg, Sama, Yajur, and Artharva)."