What are hallmarks of an advanced civilization that were found among the ruins of Mohenjo-Daro?

Great Bath, Citadel, Lower Town, and homes.

Explanation:

Mohenjo- Daro site consists of two mounds. The higher mound is known as Citadel. The structures here built on artificial mud and mud-brick platform.  The buildings on the Citadel are closely associated with the Harappa Civilization. In the north, it had Great Bath, which is the finest example of Harappan engineering skill with staircases. The wall and floor tightly sealed with close fitted bricks and a thick layer of bitumen.  

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