The Harappan Civilisation was based in the Indus Valley, and though there are suggestions of civilisations in India-
notably in the regions of South India and Sri Lanka- before this period, the Indus Valley civilisation is generally excepted
as the first Indian Civilisation- now in modern day Pakistan.
It is thought that the Harappans were an advanced peoples, who lived peacefully, and cultivated land. They provide the
bases of the modern day religion of Hinduism, as well as show how some of the intellectual advances of Science( notably maths-
ie algreba, ect) and literure( its many languages).
The Harappan civilisation was eventually( around the 1700BC) taken over by Aryan invaders.