I thought I would add that there are genetic markers of what are considered to be Europeans in Native American tribes.
Twenty-five thousand years ago Xenia and her descendents lived in a chilly Kazakhstan. Today about six per cent can call her mother. Her band
populated central Asia and Siberia, and some migrated to the Americas, as well as to France and Britain.
Those sites in Peru are amazing. I tried to find more information on how Tiwanaku is dated to the first millennium, but all I could were just plains
statements that this is the age of the site.
However, we do have Caral in Peru, which is the city I believe they are talking about on the first page of the thread, which is dated to 3,000 BC
A sad thing I learned is that TIwanaku apparently is in a pretty bad state. They built a railroad right through the site, using the stone of the site
to as a foundation for the tracks.
What a shame as it seems to be one of the most amazing architectural sites on the planet.