Whats one of the earliest cities along indus river?

One of the earliest cities along Indus River is Mohenjo-Daro, which dates back to around 2500 BC. It was a major centre of the ancient Indus Valley Civilization and is considered one of the world's earliest urban settlements. Mohenjo-Daro covers an area of over 300 hectares and is known for its advanced city planning, drainage system, brick buildings, and Great Bath. The city flourished until about 1900 BC when it was abandoned due to reasons that are still not fully understood.