why do we not know if any dynasties preceded the Shang?

We don't know any dynasty that preceeded the Shang because Historians have founf evidence that the Shang dynasty was the first dynasty and there have been no other proof otherwise, regarding preceeding dynasties of the Shang.
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sohail09753 sohail09753 · Answer 2 · 2022-01-13T13:19:43+01:00

The Shang dynasty is said to be the first dynasty that was founded around 1600 BCE by Cheng Tang. It was established by overthrowing the evil kings of the legendary Xia.

Shang Dynasty

The Shang Dynasty was the first dynasty that ruled China. They were known as the Bronze Age of China. The things for which they became famous were their inventions towards advances in maths, astrology, and artwork.

In the context of the historians, there was no other dynasty found preceding the Shang dynasty because there is no evidence or any other proof that shows regarding any other dynasty that was before the Shang dynasty.

Learn more about the Shang dynasty here:

https://brainly.com/question/873887