Scientists believe that the first A

Scientists believe that the first Americans came from northeast Asia. These people
were probably hunters from what is now northern China, Japan, or Siberia. Many
thousands of years ago, they crossed over from Asia to what is now Alaska. From there,
they spread throughout North and South America. The first evidence for this theory
was found in Chile in 1936, when scientists found the teeth of some very early
Indians. These teeth proved to be very similar to the teeth of people in