Greek writers Strabo and Justin called Chandragupta Maurya —

Chandragupta Maurya fought Seleucus I Nicator around 305 BCE. Their settlement transferred eastern territories to Chandragupta and established diplomatic relations between the Mauryan and Seleucid courts. This question belongs to the political, religious and diplomatic history of the Mauryan age. A sound answer requires matching the ruler, person, place, title or event with its correct chronological and documentary setting. Mauryan history is reconstructed from several different bodies of evidence: Ashokan inscriptions, archaeological remains, the Arthashastra tradition, Buddhist and Jain narratives, Puranic genealogies, and Greek or Roman accounts. These sources were produced at different times and for different purposes, so their claims should not automatically be treated as identical in reliability.