How long have humans walked earth particularly north America

Now our understanding of when people reached the Americas—and where they came from—is expanding dramatically. The emerging picture suggests that humans may have arrived in North America at least 20,000 years ago—some 5,000 years earlier than has been commonly believed.

Hope this helped :)

i think it’s will be a yes

thing is, i'm afraid, you can't.

the most you can do is log out and never log in again.