The Harappan Civilisation declined as a result of

A. Aryan invasion

B. Decline in foreign trade

C. Ecological factors

D. Not definitely known factors

Answer: Option D

Solution(By Examveda Team)

Though the reason of the decline is not known, but through excavations it is clear that fall of the Harappan Civilization occurred between 1800 BC to 1700 BC. It is commonly believed that the Aryans were the next settlers.