The action of reserving something.Land set aside or "reserved" for a special purpose, such as for one group to settle on. hope i helped
From what I know the answers are A and D
I would say that the location is the major reason why the United States managed to stay isolated - it is separated by two big bodies of water (the Atlantic and the Pacific Ocean) and specifically, it is separated by the Atlantic Ocean from Europe -this allowed it to say away from the European affairs.
The answer is B. Gadsden purchase.
According to the true story of the Newsboys Strike of 1899 by Mack Lewis the N2: Newspapers were the only way to find out what was going on in the world.