This is a timeline of Indian history, comprising important legal and territorial changes and political events in India and its predecessor states.
[8] Madrasian culture sites have been found in Attirampakkam (Attrambakkam=13° 13' 50", 79° 53' 20"), which is located near Chennai (formerly known as Madras), Tamil Nadu.
[9] The stone tool artifacts in this assemblage have been identified as a part of the second inter-pluvial period in India.
The ancient history of the region includes some of Indian subcontinent's oldest settlements[15] and some of its major civilisations.
[16][17] Over the course of the next 1000–1500 years, inhabitants of the Civilization developed new techniques in handicraft (carnelian products, seal carving) and metallurgy (copper, bronze, lead, and tin) had elaborate urban planning, baked brick houses, efficient drainage systems, water supply systems, and clusters of large non-residential buildings.