Chandragupta Maurya is often credited with establishing the Maurya Empire in ancient India around 322 BC. He unified the Indian subcontinent after overthrowing the Nanda Dynasty and was supported by his advisor Chanakya (Kautilya). This empire marked a significant era of political centralization and administrative organization in India, leading to advancements in trade, culture, and governance. Chandragupta's reign set the foundation for later rulers, notably his grandson Ashoka, who expanded the empire and promoted Buddhism.