Question

i. Why did Seleucus invade India? And What happened after invasion?​

Answer 1

Consequences. Seleucus Nicator ceded the Hindu Kush, Punjab and parts of Afghanistan to Chandragupta Maurya. In consequence of their arrangement, Seleucus received 500 war elephants from Chandragupta Maurya, which subsequently influenced the Wars of the Diadochi in the west.

Seleucus I Nicator's invasion of India (c. 306-303 BC) was one of a series of obscure campaigns fought by Seleucus in an attempt to gain control of the eastern part of his recently regained kingdom.