Chandragupta Maurya (reigned c.ā320 BCE ā c. 298 BCE) was the founder and the first emperor of the Maurya Empire, based in Magadha (present-day Bihar) in the Indian subcontinent.
His rise to power began in the period of unrest and local warfare that arose after Alexander the Great's Indian campaign and early death in 323Ā BCE, although the exact chronology and sequence of events remains subject to debate among historians. He started a war against the unpopular Nanda dynasty in Magadha on the Ganges Valley, defeated them and established his own dynasty. In addition, he raised an army to resist the Greeks, defeated them, and took control of the eastern Indus Valley. His conquest of Magadha is generally dated to c. 322ā319 BCE, and his expansion to Punjab subsequently at c. 317ā312 BCE, but some scholars have speculated that he might have initially consolidated his power base in Punjab, before conquering Magadha; an alternative chronology places these events all in the period c. 311ā305 BCE. According to the play Mudrarakshasa, Chandragupta was assisted by his mentor Chanakya, who later became his minister. He expanded his reach subsequently into parts of the western Indus Valley and possibly eastern Afghanistan through a dynastic marriage alliance with Seleucus I Nicator c. 305ā303 BCE. His empire also included Gujarat and a geographically extensive network of cities and trade-routes.