Chandragupta I Maurya

Chandragupta is the founder of the Mauryan Empire. He united all of Northern India under his dynasty and signed a treaty with Seleukos I Nikator where he supplied war elephants in exhange for some territories along the Indus river.

Succession crisis
Chandragupta's oldest son Bindusara had been killed while trying to escape imprisonment which had been imposed on him by his father. With his favored heir dead, when Maurya himself die an succession crisis erupted in his empire.