Why don't we know what happen to the mohenjo-Daro and Harrapa?

Answer 1

The decline of the Indus Valley Civilization, including cities like Mohenjo-Daro and Harappa, remains largely a mystery due to the lack of written records and the challenges in interpreting archaeological evidence. Possible factors for their decline include climate change, shifting river patterns, and socio-economic factors such as trade disruptions or invasions. Additionally, the preservation of artifacts and structures has been compromised over time, complicating our understanding. As a result, while various theories exist, no definitive explanation has been universally accepted.