Answer:
There was a lot of exchange of diseases.
Explanation: "European people also brought diseases, like smallpox, to the Americas. The rats from European ships brought other diseases. Americans who caught these diseases died from them because they had no immunity—their bodies did not know how to fight off the germs."
Cited from https://lsintspl3.wgbh.org/en-us/lesson/midlit11-soc-splcol/6#:~:text=Not%20every%20part%20of%20the,to%20fight%20off%20the%20germs.
One of the greatest challenges facing people in turkey as a result of its diversity would be that "<span>c.kurds must struggle to keep their culture alive," since they are often seen as being marginalized. </span>
As part of his Reconstruction plan, President Johnson thought the South should be treated relatively fairly, compared to how the radicals in Congress thought they should be treated.
Yes, it is normal for the economy to go through cycles of expansion and recession, since this is called he "business cycle". It is not normal, however, for recessions to turn into depressions.