There was a survey done around places where there is archeological finds of something old.
From Axum, to China, Mongolia, Iran, Afghanistan, Turkey, Egypt, Crimea, Peru, Mexico....
Who (Which people who live currently around these findings) do you think has closest knowledge of the meaning, technology, purpose...of these findings?
Iranians are most knoledgeable and closest to facts of the findings.
Egyptians are furthest and have no clue of the findings around them.
Everybody else is in between.