Just like Afrocentrists have cockamamie theories, so do Eurocentrists. Some people believe that the first peoples of the Americas were the Solutreans, a stone age people from France and Spain who existed around 25 kya, and ended 16,500 ya. They would have had to cross 3000 miles of ice and water, does that seem possible 20 kya? Not at all.
The Solutrean Hypothesis first came about in the 30s by archaeologist Frank Hibben. He noted that the style of the spear tips the Solutreans used was like that of the Clovis culture in the Americas, who are the oldest culture on the continent. He said the tips bore an extremely strong resemblance to those from the Solutreans in Europe.
The points of the tips are different (diamond shaped, non-fluted vs concave bottoms, fluting). They also didn’t have boats to cross the ocean to reach the Americas.
From this Nature article, we can see that the genome of the Clovis people had direct ancestry to Native Americans:
An alternative, Solutrean, hypothesis posits that the Clovis predecessors emigrated from southwestern Europe during the Last Glacial Maximum4. Here we report the genome sequence of a male infant (Anzick-1) recovered from the Anzick burial site in western Montana. The human bones date to 10,705 ± 3514C years BP (approximately 12,707–12,556 calendar years BP) and were directly associated with Clovis tools. We sequenced the genome to an average depth of 14.4× and show that the gene flow from the Siberian Upper Palaeolithic Mal’ta population5 into Native American ancestors is also shared by the Anzick-1 individual and thus happened before 12,600 years BP.
Consistent with the population migration from Siberia into the Americas, as noted in this study. This study I will quote below also shows why some of the same alleles are found in both Europeans and Native Americans:
Y chromosomal DNA polymorphisms were used to investigate Pleistocene male migrations to the American continent. In a worldwide sample of 306 men, we obtained 32 haplotypes constructed with the variation found in 30 distinct polymorphic sites. The major Y haplotype present in most Native Americans was traced back to recent ancestors common with Siberians, namely, the Kets and Altaians from the Yenissey River Basin and Altai Mountains, respectively. Going further back, the next common ancestor gave rise also to Caucasoid Y chromosomes, probably from the central Eurasian region. This study, therefore, suggests a predominantly central Siberian origin for Native American paternal lineages for those who could have migrated to the Americas during the Upper Pleistocene.
And what do you know? There was this study proves the bolded text from the above study. That the Caucasoid Y chromosome comes from the central Eurasian region, which is where the Yamnaya came from, who populated Europe around 4500 years ago.
A study of the genetics of Kennewick man from Nature says:
We therefore conclude based on genetic comparisons that Kennewick Man shows continuity with Native North Americans over at least the last eight millennia.
That proves that Kennewick man was of Siberian origins, not European.
To round this up, some people like to say how some of the Natives have myths that a bearded white man came from across the Atlantic and gave them knowledge, who then left, promising to return. Then on the same day he promised he would return, was the day that Hernan Cortez landed at the Yucatan Penninsula. From their myths, they knew that the man was a god, because of his description.
People like to say that this myth proves Europeans crossing the ocean thousands of years ago to give knowledge to Native peoples of the Americas. Ridiculous, and here is why.
When the Aztec Empire fell, they needed a way to explain how their once great empire fell. So they then thought of the myth I described above. That the only way their civilization could have possibly fallen is only because of a god.
In conclusion, the Solutrean Hypothesis has no basis in genetics, paleoanthropology, and even basic common sense. Those who say that the Hypothesis is true are uneducated, and just like Afrocentrists, trying to push an untrue agenda.