Question

Although there is evidence now that several human groups colonized the Americas, possibly using different routes, those that crossed over through Bering Land Bridge to reach the Americas did so because

Answer 1

Groups crossed the Bering Land Bridge, or Beringia, during the last ice age following megafauna, and both the Bering Land Bridge and coastal migration theories are accepted, indicating complex migration patterns over land and by sea.

Step-by-step explanation:

The human groups that crossed over through the Bering Land Bridge into the Americas did so during the last ice age when sea levels dropped and exposed a land connection between Asia and North America. This event occurred approximately 50,000-10,000 BP (before present), with migrations believed to have taken place between 10,000-14,000 BP. The first inhabitants followed megafauna such as mammoths across this land bridge, which was known as Beringia. The retreating glacial ice and the rich marine environments along the shores provided resources to support these groups as they moved into and across the Americas. Most archaeologists and historians acknowledge both the Bering Land Bridge and coastal migration theories. Both routes were likely used over an extended period of time, contributing to the varying cultures and languages throughout the Americas. Artifacts, genetic markers, and linguistic diversity support the notion of complex migration patterns, involving both overland travel and sea voyages.