kmwilliams9019
10.07.2019 •
Social Studies
Why do scientists think that people traveled the central american land bridge around 11,000 bce? ( there was no answer choices) (98 points)
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Ответ:
The Bering land bridge is a postulated route of human migration to the Americas from Asia about 20,000 years ago. An open corridor through the ice-covered North American Arctic was too barren to support human migrations before around 12,600 BCE.
Ответ:
As temperatures warmed across Beringia beginning around 18,000 years ago, very small numbers of people pushed into Northeastern Siberia and onto the land bridge. Perhaps they encountered the descendants of the Beringian standstill population, also on the move. They brought with them a stone technology from Siberia, Mongolia, or even Japan that was ideal for hunters traveling in very cold environments. Their barbed hunting weapons were comprised of small, very sharp “microblades” knocked off from lumps of fine-grained rocks. They also hunted with spears tipped with nicely flaked stone projectile points. Fortunately for archaeologists, we can trace the distribution of these distinctive technologies over very long distances. Both the edge-shaped blanks used to make microblades and small, teardrop-shaped spear points appear in Alaska as early as 14,000 years ago.
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Ответ:
Flat, high land surrounded by mountains and pleasant climate.
Explanation: