While you didn't really provide the "following" as the comment above me states, in general, the advantage of secondary sources of primary ones is that they perhaps provide a more objective or even just a broader view on a certain topic. While a primary source of the American civil war would be a letter written by a soldier, a secondary source would be a book that describes more letters taken together and discusses possible information regarding them.
Answer:
Don Ray’s desire to gain insight into his home country of Canada took him to an unexpected place — Africa.
While in university, Ray was faced with the choice of studying either Canadian or African politics.
“I thought that I would better understand my country by understanding what was happening in other parts of the world and then bringing lessons back from there to Canada.”
Now a professor in the Department of Political Science at the University of Calgary, Ray is still learning lessons in Africa that he hopes to share with the North.
Explanation:
They reduce the time (by making it faster) and reduce the cost of trading (by making it efficient).
Some possible new ideas could be:
LGBTQ Have the same military rights as everyone else.
New regulations for who can qualify to be in the presidential race.
Or, A whole new layout for the United States.
Hope this helps!