The largest fear was the position on the slave issue. The pro and anti slavery advocates feared that the addition of California to the Union could cause a senate majority on the other side. The territory was left without a formal government after a debate within the senate and failed the amendments about the addition of California.
In 1800s life in the US was not easy. The lands was big, wild and still mostly untamed. The travel was slow and often wrought with peril as the dangers loomed on the roads, if there were any at all. Most of the Americans, two thirds of them in fact lived near the Atlantic coast and that is within 50 miles of it. Also, west of the Appalachian mounts only one tenth of the Americans lived there.
The answer to this answer is A.
The National American Free Trade Agreement (NAFTA) had a purpose of supporting free and easier trade between other nations (specifically the US, Canada, and Mexico), which is very close to the details mentioned in this quote.
If you were to read the NAFTA, you would find this quote in Chapter 1, Article 102.
4.2,4,5
5.d
6.a
hope it helps
