This is a personal question, which means that only you can answer it. However, I can give some examples that might help guide your work.
An example of a primary source that you might encounter in your own life is that of a news article. As this article is likely to be written by a reporter witnessing the events, it can be considered a primary source. On the other hand, an example of a secondary source would be a non-fiction book that talks about a historical event. This is because such a book would give a second-hand account of an event based on historical information.
I think I do not know for sure, but I believe it was "civilization and enlightenment."
Hope this helps please tell me if it did. ;-)
The answer to this is true
The disagreement over representation in Congress was critical. the large states
