Experts believe that most Native Americans died of diseases like smallpox, typhoid, or diphtheria in the first decades of contact with European settlers. Which statement best explains this phenomenon?

Native Americans refused medical treatment from Europeans.
Native Americans had never been exposed to those diseases.
Native Americans were infected on purpose with those diseases.
Native Americans did not have access to more modern medicine.****

No. That is not the answer needed here, although no one had access to "modern" medicine back then.

I think it is B or D

D is not the right answer, as you originally posted. B is correct.

Ok thanks so much!

Which factor BEST explains why Native Americans were able to make permanent settlements?

The correct statement that best explains the phenomenon is: "Native Americans did not have access to more modern medicine."

When European settlers made contact with Native Americans for the first time, they brought with them various diseases, such as smallpox, typhoid, or diphtheria. These diseases were already prevalent in Europe and had significantly impacted the population there. However, the Native American population had never been exposed to these diseases before, which means they had no immunity or resistance to them.

As a result, when Native Americans came into contact with the European settlers, they were highly vulnerable to these new and deadly diseases. The lack of exposure and immunity, combined with the limited access to modern medicine or medical knowledge, meant that Native Americans were particularly susceptible to these diseases.

It is important to note that it is not accurate to say that Native Americans refused medical treatment from Europeans or that they were infected on purpose. The main contributing factor to the high mortality rate among Native Americans was their lack of immunity and limited access to effective medical treatments, rather than intentional actions or unwillingness to accept medical help.