Large cities such as Harappa and Mohenjo-daro developed in the Indus River Valley. (jan 1, 2500 BC – jan 1, 1600 BC)
Description:
https://docs.google.com/document/d/1diZZ1cUDXWeIIvete1ks1U5hJsC3mSg4e_k0_WOyZ34/edit?usp=sharingAdded to timeline:
Date:
jan 1, 2500 BC
jan 1, 1600 BC
~ 900 years