Question

How do researchers know that tiahuanaco was an advanced civilization

Answer 1

Tiahuanaco was one of the earlier culture in Bolivian Highland. The archaeological excavations and artifacts showed that Tiahuanaco was an advanced civilization. Advance because they used advanced engineer methods during that time in history.

Answer 2

Archaeologists and scientists know this due to archaeological excavations and artifacts showing that they used advanced engineer methods during that time in history.

Hope this helps!~