As city populations increased in the early 1900s, cities grew up and out.
<span>here
is archaeological evidence for human occupation before the land bridge
from Siberia opened up.
There has also been some recent DNA evidence
that suggests there might have been some European settlers before the
Vikings.
Although most of the DNA evidence points to Northern Asia. </span>
Explanation:
The distance between Great Britain and North America led to slow communication between the British government and the American colonies. ... This lack of enforcement allowed the colonists to develop their own representative institutions.
Answer:
Solutrean Hypothesis, Hope this helps :]