The document summarizes the establishment of two major empires in India - the Mauryan Empire from 321 BC to 232 BC, and the Gupta Empire from AD 320 to 550. The Mauryan Empire was founded by Chandragupta Maurya and expanded by his grandson Asoka, who promoted Buddhism. The Gupta Empire was founded by Chandra Gupta I and expanded by his son Samudra Gupta and grandson Chandra Gupta II, during which time Indian culture flourished. Both empires declined after the deaths of their strongest rulers.