Scientists are absolutely certain when and how the first people appeared in the Americas.

Question

Is this true or false what can i do to find out what this is can someone help me typing to figure this out. 

Answer 1

It's false.  To find out, do a Google search for when people first appeared in the Americas!  Be sure to look for authoritative sources.  Here is an article from Smithsonian magazine from 2013:

 

http://www.smithsonianmag.com/science-nature/when-did-humans-come-to-the-americas-4209273/?no-ist=utm_20130206&page=3

 

You could also use a little common sense.  How would scientists figure out something line that?  They would look for and exam artifacts, things made by and left behind by humans.  Scientists do agree that humans arrived in the America's sometime withing the last 25,000 years.  Most high school textbooks still say about 10,000 to 12,000 years ago, some say 15,000, but archaeological finds seem to keep pushing the date back.  However, notice they always say "about."  Ancient humans did not publish newspapers or keep detailed historical records, so it is not possible to be absolutely certain.

 

As to how, there does seem to be concensus among scientists that humans spread through Asia and crossed into North America across a land bridge that used to exist between Siberia and Alaska.  

 

In the end, even if scientists agreed on where the first settlement in the Americas was, they could only agree on an approximate time.  Sating 10, 0r 12, or 15 thousand yeqrs ago is necessarily an approximation.