Answer: "End of American Neutrality".
Explanation: ...
The best option from the list would be that fairs took place "once a month" in the Middle Ages, but it usually had more to do with the changing of the seasons than with the start of each month.
C) a decline in advertising.
The main was the Berlin Conference affected Africa was by chopping it all up into areas that would be colonized by several European countries. Before the Conference, Africans did have most of Africa still in their hands. During the conference, the European countries divided up essentially almost all of Africa. That means European countries would get to own parts of Africa.
This added fate to the African continent.
This affected colonization in 2 BIG ways:
-colonial governments and economies were made/set up to help the Europeans, NOT the Africans. They did not really educate Africans, either.
-Another way was the European governments easily divided Africa up however they wanted and needed. (not even taking the human geography of Africa under consideration) They separated people of 1 ethnic group into different countries. Once these countries became independent, they obviously ended up having ethnic conflicts, which further weakened them.
Overall, the main affect of the Berlin Conference was to colonize Africa, which lead to MANY of the problems that the continent still endures to this day.
Hope I helped :)
Answer:
It'd allow the North to control goods going down the river to the South. Doing this, the North could cut off food or weapon supply to "starve out" the other side. The North could also use the Mississippi for transporting their own troops into battle.