Open study

is now brainly

With Brainly you can:

  • Get homework help from millions of students and moderators
  • Learn how to solve problems with step-by-step explanations
  • Share your knowledge and earn points by helping other students
  • Learn anywhere, anytime with the Brainly app!

A community for students.

When do researchers believe people first arrived to America.?

History
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

Join Brainly to access

this expert answer

SEE EXPERT ANSWER

To see the expert answer you'll need to create a free account at Brainly

Before the arrival of Europeans in the Americas in the late 15th and early 16th centuries, Native Americans had occupied these continents for thousands of years. The oldest human remains and artifacts found in North America are dated to about 11,500 years old. This age roughly coincides with the end of the last ice age. For many years, the similarity in timing was thought to explain the origin of the first Americans. However, human settlements have been discovered in South America that predate access to an inland migration route, suggesting that new hypotheses about the earliest human migration into the Americas must be considered. Between about 65,000 and 10,000 years ago, during Earth's most recent era of global cooling, the Pleistocene, temperatures were on average five degrees Celsius (nine degrees Fahrenheit) cooler than they are today. This decrease in temperature led to greater amounts of precipitation falling as snow, which caused glaciers to become widespread over high latitudes. This, in turn, caused sea levels to drop and exposed relatively shallow continental shelves, including the shelf connecting Asia with Alaska. For decades, the leading hypothesis proposed that Pleistocene hunters crossed the 1,500-km-wide (932-mi) Bering land bridge in pursuit of large game animals, such as mammoths and musk oxen. From there, these ancient hunters were thought to have benefited from the timely retreat of the glaciers and an ice-free corridor through west-central Canada and into the rest of North America. However, recent evidence suggests that this ice-free corridor may have remained closed until about 11,000 years ago, 500 years later than evidence places people much further south. In fact, recent archaeological finds in Chile and Venezuela provide evidence that there were people in South America as early as 12,500 years ago. In coastal areas of Alaska, scientists have found remains of land and sea mammals, as well as birds and fish, dating as far back as 13,000 years ago, suggesting that people paddling small boats along the coast en route to the Americas might have had sufficient resources to survive. In light of these new pieces of evidence, some archaeologists propose that early migration from Asia to the Americas may have taken place along the coasts, rather than further inland. To date, however, scientists have found no evidence of human settlements from this important time period.

Not the answer you are looking for?

Search for more explanations.

Ask your own question

Other answers:

Not the answer you are looking for?

Search for more explanations.

Ask your own question