Answer:
Native American populations declined rapidly due to a lack of immunity to disease
Explanation:
At that time, many Europeans who came to American continent carried out viruses that could cause diseases such as smallpox, influenza, and measles within their body.
When they "Encountered" The native Americans, these viruses passed on to the Natives and infected them.
Because the natives have lack of immunity to disease (they never experienced diseases like that in their life) , the effect to their body is much greater compared to the Europeans. This led to large amount of death among Native Americans.
Or the first question it is B and for the second question it is D and for the 3rd question it is A
presenting is the root word or base word for this situation man
Rivers are part of landforms such as mountains, prairies and valleys. They can be part of different land forms a the same time.
