40,000 BC-(c. 1.5 million to 200,000 years ago) is represented in virtually all regions of India, but not Sri Lanka. It is a period of two major traditions of early tool making
the Copper Age
The Middle Paleolithic, which was characterized by flake tools and the widespread use of fire, lasted from about 250,000 to 30,000 years ago
the bronze age
The Upper Paleolithic, which saw the emergence of more sophisticated tools, lasted from about 50,000–40,000 years ago until about 10,000 years ago.
the iron age
The 1,000-year-long Copper Age is also known as the Chalcolithic Period. It lasted from about 4500 B.C.to 3500 B.C
Bronze tools and weapons soon replaced earlier stone versions. Ancient Sumerians in the Middle East may have been the first people to enter the Bronze Age