The correct answer to this open question is the following.
Although the previous link was not attached, we can say the following.
The central ideas or information of a primary or secondary source are the following,
A primary resource comes from the people who witnessed the event, the incident, or the specific moment. These people could have written their own descriptions, testimonies, books, or maybe journalists that directly reported what happened. It also could be an interview with people who were part of the historical event. For instance, if it is a soldier that participated in the Vietnam War, a journalist can interview him and use it as a primary source.
On the other hand, secondary sources can be obtained from other sources that were not direct. This could be an author that based its story in other investigations, or it could be encyclopedias.
I'd say pollution or disease.
Answer: The telegraph made communication much easier, the railroad made transportation of goods and people quicker and easier. The sewing machine made life on the plains easier.
Answer:
Since the BOP essentially serves as the financial ledger and source of truth around a country's financial transactions on all fronts, you can imagine that it is incredibly important. The BOP can reveal the economic health of a nation and help economists postulate its future economic landscape.
Explanation:
