Copper Hoard Culture: Copper was discovered about 6000 years ago by humans. He made weapons and tools from Copper. A lot of these weapons were found from the Ganges-Jumna Doab and the Indus valley (Sindhu Ghati) area. It is believed that copper was used by Aryans. Copper made tools were used from 2500 BC to 1500 BC. After that iron was discovered and copper was replaced by … [Read more...]