Which theory do most scientists believe about the first inhabitants of North America

1. which theory do most scientists believe about the first inhabitants of north america?

a: they walked across the frozen bering land bridge.

2. which of the following reasons best explains why american indians in the arctic built igloos?
a: to provide shelter from the cold

3. which of the following early north american cultures were known for building wigwams and longhouses?
A: eastern cultures

to anyone who needs help !! <3

You're welcome! Don't worry, you spelled it right! If you need any more help, feel free to ask!

thank you @kanamafu (sorry if I spelled it wrong) that really helped me check my answers!

thx

Most scientists believe that the first inhabitants of North America were indigenous peoples who crossed into the continent from Asia via a land bridge called Beringia during the last Ice Age. This theory is commonly known as the Bering Land Bridge Theory or the Beringia Theory. To understand why most scientists hold this belief, it's important to explore the evidence and the scientific process that led to this conclusion.

Here's how you can arrive at this theory yourself:

1. Research: Start by researching the subject using trusted sources such as academic journals, books, and reputable websites. This will provide you with a solid foundation of knowledge about the topic.

2. Geological Evidence: Scientists have used various methods, including carbon dating and analysis of sediment cores, to study the geological history of the Bering Strait region. These studies reveal that around 20,000 to 30,000 years ago, sea levels were much lower due to the presence of massive ice sheets during the last Ice Age. This lowered sea level created a land bridge called Beringia connecting Siberia (Asia) and Alaska (North America).

3. Archaeological Discoveries: Consider the archaeological evidence that supports the Bering Land Bridge Theory. Archaeologists have found ancient tools, artifacts, and human remains in both Siberia (specifically in Northeast Asia) and North America that are similar in style and age. This similarity strongly suggests a cultural and physical connection between the two regions.

4. DNA Analysis: Genetic studies have played a crucial role in tracing human migration patterns. By analyzing the DNA of modern indigenous populations in both Siberia and North America, scientists have found genetic links that indicate a common ancestry. This supports the theory that humans migrated from Asia to North America.

5. Native Oral History: Although not considered as strong scientific evidence, many indigenous communities in North America have oral traditions that recount their ancestors crossing a land bridge into the continent. While oral history should be approached with caution, it can provide valuable insights when combined with other scientific findings.

Combining all these pieces of evidence from geological studies, archaeology, genetic analysis, and native traditions, scientists have developed the widely accepted theory that the first inhabitants of North America originated from Asia and crossed into the continent through Beringia. However, scientific theories are always subject to revision as new evidence emerges, so it's important to continue researching and staying updated on the latest scientific findings in this field.