Many theories exist about how people first got to the Americas, but there are three really
predominant theories: the oldest being the theory of the Bering Land Bridge and then,
more recent in the last couple decades, are the Atlantic Theory and the Oceania Theory.
There are others, but these are the three we're going to cover today.
The most commonly held is the Bering Land Bridge Theory. This has been at the forefront
for over 50 years. Basically, the idea is that during the last ice age, about 20,000
years ago (or a little less), lower water levels created a frozen bridge of land. The
first settlers of the Americas are believed to have come across this land bridge called
Berengia. This theory has dominated for a long time, but there are other ideas discussing
what may have brought the people who developed into native cultures.
Our next theories actually involve Boats. That's right, boats! It's probably hard to
believe that Stone Age people were crossing the ocean, but people have actually tried
to reproduce vessels with Stone Age tools, supplies and everything. It's important to
remember, just because a modern human can build something with Stone Age tools, it doesn't
mean that a Stone Age craftsman could have. These are all theories, but remember, these
are theories that do have strong supportive evidence.
The first theory is the Atlantic Theory. The name kind of tells you that this is going
to assume that people had to cross the Atlantic Ocean. Archeologists have found these specific,
early spear points, originally found near Clovis, New Mexico. Being deemed Clovis Points,
for a long time they were offered as evidence for the Land Bridge theory because similar
points have been discovered in the area the around Beringia. It turns out, though, these
spear points are very similar to points found in Europe, and the oldest example to be found
in the Americas have actually been found in the Eastern U.S. This points to migration
from Europe to the east of the Americas. This migration pattern would mean that the people
who made these earliest spear points had to cross the Atlantic.
Now if people crossed the Atlantic, obviously, we need a theory of people crossing the Pacific!
This is the Oceania Theory. Anthropologists and linguists couldn't help
but notice that the culture and languages of South America had oddly similar traits
to those of Australia and Polynesia. This theory would also mean people would have had
to use boats, but this time to cross the Pacific.
This journey would have been later than either of the other theories we discussed. The best
evidence of this is the finding of the Kennewick Man. The 9,500-year old Kennewick skeletal
remains were found in Washington State in the nineties. The features of the remains
are in line with the Ainu, a native people of Hokkaido, Japan. Now, I don't really see
the resemblance, but it may be the reconstruction's lack of facial hair! But seriously, this discovery
is evidence of a tie to early Native American people from the Pacific Region.
So, there are three theories that we covered. The most evidence available makes the arrival
of people across the Bering Land Bridge almost definite. There is also good evidence for
the Atlantic Theory and Oceania Theory as well, but the evidence is far thinner. Many
other theories exist, but what we know for sure is that people were in the Americas long
before Christopher Columbus or the Vikings.