The Clovis culture was one of the earliest archaeological cultures to extend throughout North America.
Notes on verification
Well-corroborated by multiple independent, reputable sources including Wikipedia, Britannica, Smithsonian, and academic/genetic research. Claim is carefully phrased as 'one of the earliest' rather than 'the first,' avoiding conflict with newer evidence of pre-Clovis sites like Monte Verde.
Sources
- Why Did the Clovis People Mysteriously Vanish? | HISTORY (history.com)
- The Clovis Point and the Discovery of America's First Culture (smithsonianmag.com)
- https://www.hhmi.org/news/clovis-people-spread-central-and-south-america-then-vanished (hhmi.org)
- https://coloradoencyclopedia.org/article/clovis (coloradoencyclopedia.org)