USA HISTORY

Detailed explanation-1: -The settlement of the Americas began when Paleolithic hunter-gatherers entered North America from the North Asian Mammoth steppe via the Beringia land bridge, which had formed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum (26, 000 to 19, 000 years ago).

Detailed explanation-2: -As of 2008, genetic findings suggest that a single population of modern humans migrated from southern Siberia toward the land mass known as the Bering Land Bridge as early as 30, 000 years ago, and crossed over to the Americas by 16, 500 years ago.

Detailed explanation-3: -The first definitive archaeological evidence we have for the presence of people beyond Beringia and interior Alaska comes from this time, about 13, 000 years ago. These people are called Paleoindians by archaeologists.

Detailed explanation-4: -People travelled by boat to North America some 30, 000 years ago, at a time when giant animals still roamed the continent and long before it was thought the earliest arrivals had made the crossing from Asia, archaeological research reveals today.

Detailed explanation-5: -There is plenty of evidence to suggest that humans migrated to the North American continent via Beringia, a land mass that once bridged the sea between what is now Siberia and Alaska.