Actually, it was those trouble making Asians again ... the Europeans came later, or earlier depending on who you believe. Who these people were is anyone’s guess as they were here 110,000 years prior to any of the later lot.
One thing however, there are stone pyramidal ruins in SoAm that also have been dated from this period - I can’t remember where - I think it was along the Peruvian coast. Very controversial, of course, as it does not fid the modern scientific theory of gradualism.
There is a great scandal.in North American archaeology akin to that pertaining to Egyptology.
Science is out the window, as a few hardheads are preventing actual debate on when humans came to NA.
If you’re not aware, research the controversy over the Mexican site at Hueyatlaco. There was a documentary about it I saw on Amazon and at the end I was so mad I was fit to be tied, having learned that this BS has not only infected other sciences, by my beloved archaeology.
The book about it was titled Forbidden Archaeology.