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People from Great Britain populated America in the mid 17th century

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Nat Olson

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Q: What two leading theories explain how the first humans came to the Americas?
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What two leading theories explain how the first humans came to the America?

The two leading theories are the Coastal Migration Theory, which suggests that the first humans arrived in the Americas by traveling along the Pacific Coast in boats, and the Clovis First Theory, which proposes that humans first arrived in the Americas via a land bridge from Asia during the last Ice Age.


How are the theories of migration to Americas different?

The two main theories of migration to the Americas are the Beringia Land Bridge theory, which suggests that early humans crossed a land bridge from Asia to North America, and the Coastal Migration theory, which proposes that ancient humans migrated by following the Pacific coast. The main difference lies in the routes taken by the migrating populations, with one theory focusing on a land bridge and the other on coastal migration pathways.


Why did mammoths become exstinct?

Scientists do not know for certain why mammoths died out. Theories include climate change leading to habitat loss or overhunting from humans.


What has been a leading theory about how humans beings first came to the Americas?

The leading theory is that humans first came to the Americas by crossing the Bering land bridge from Asia to North America during the last Ice Age. This migration is believed to have occurred around 15,000-20,000 years ago as the ice sheets melted and opened up a corridor for early humans to travel.


What are the other theories of humans?

Some other theories humans have devised are:The Big Bang theory of cosmological expansionThe theories of general and special relativityThe germ theory of diseaseAtomic theory and quantum mechanics


What are the theories about the disappearance of the neanderthals?

Some theories suggest that Neanderthals interbred with anatomically modern humans, leading to their disappearance through genetic assimilation. Others propose that environmental factors, competition for resources, or even direct conflict with modern humans contributed to their extinction. It is likely that a combination of these factors, rather than a single cause, led to the disappearance of Neanderthals.


What does the land bridge theory explain form about 10000?

The land bridge theory suggests that around 10,000 years ago, a land bridge called Beringia connected Asia and North America, facilitating the migration of early humans into the Americas. This theory helps explain how humans first populated the Americas by crossing from Asia into North America.


How did the humans first migrate to the Americas?

While there are many theories, the most commonly accepted is that they walked over across the land bridge that used to exist between present-day Russia and Alaska.


What are theories of how humans were created?

There are various theories about how humans were created, including religious beliefs such as creationism, which posits that humans were created by a divine being. Scientific theories, such as evolution, propose that humans evolved over millions of years through the process of natural selection. Other theories involve the idea of panspermia, which suggests that life on Earth originated from microorganisms or organic compounds brought here by comets or meteorites.


Which of the answers best describes the social sciences?

The theory or theories that can best explain the relationships between the key variables in your study.


What different theories might explain the climate changes thet wiped out the vikings in Greenland and caused the thames river in England to freeze over could humans have caused those climate changes?

=) gd luck


How did the last great ice age have an effect on humans settling in the Americas?

During the last great ice age, large ice sheets locked up much of Earth's water, lowering sea levels and creating a land bridge between Asia and North America known as Beringia. This allowed humans to migrate from Asia into North America, eventually leading to the settling of the Americas.