Describe the life of adivasis

The Adivasis are indigenous peoples and are believed to be the first inhabitants of India. Adivasis have distinct languages, religions and forms of self-government, together with a deep bond to their land and respect for nature. 8 per cent of India’s population are Adivasis. There are over 500 different Adivasi groups in India.
Adivasi communities do not have any hierarchy among them. They are totally different from communities organised around principles of the caste system.
The religion of Adivasis is different from Islam, Hinduism or Christianity. The Adivasis worship their ancestral, village or nature spirits.
During the nineteenth century, substantial numbers of Adivasis converted to Christianity, which has emerged as a very important religion in modern Adivasi history. Adivasis have their own languages which may be as old as Sanskrit. The Adivasi language has influenced the formation of Indian languages, like Bengali.