"<span>c. Americans were concerned about the Communist takeover of Russia in 1917" is the best option since many Americans did not agree with Wilson. </span>
Answer:
decrease in sea levels
increase in vegetation
warmer global climate
Explanation:
This all helped in making human surivial easier.
A) A fort was established and many were killed by diseases
Lewis and Clark's expedition was not positive to the native of Mandan village the most devastating epidemic was the smallpox outbreak in the year 1837 killing a lot of people. The epidemic played an important factor in uniting the surviving Mandans and Hidatsa who later engaged in trade, farming and hunting.
The Pacific Ocean to the slaves to the new world
To get more resources and land. i got this from a text book