ancient india By melvin5555 3000 BCE yoga stared 2500 BCE cities of Mohenjo Daro and Harappa 1500 BCE Arya stared 1500 BCE caste system started 1000 BCE chess stared 1000 BCE iron age 871 BCE gupta empire Period: 321 BCE to 371 BCE Maurya Empire started 301 BCE Asoka was born 1400 Siddhartha Gautama (buddha) was born 1800 constructing railroad 1922 unearthed brick wall of a city built in 2500 BC