Scientists believe that the first people crossed a frozen area of water from Siberia to Alaska. People calculate this could be anywhere from 4,000 to 15,00 years ago.
I hope this helped you. If you have anymore questions, let me know.
There's some disagreement on exactly how and when, but "through Alaska" is pretty good consensus. There's a location in the Bering Strait where Asia and North America are only separated by about 60 miles, with a pair of islands in the middle allowing that to be broken into two journeys of about 30 miles each. I hope it helps and if it is correct please press brainlest ~Rie
