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.
Answer:
D. You should smile, express enthusiasm, and explain your purpose in a presentation.
Explanation:
- To improve the presentation you should be more expressive and show enthusiasm and explain your purpose and intent to the audience clearly and thus a good presentation should be first practiced and established the purpose giving the presentation with the aims and the objective should be clearly defined also one needs to analyze the audience.
