Answer:
<h3><em>Khmer usually live in Cambodia, Thailand, and Vietnam.</em></h3>
This question is a nightmare. The right answer isn't really there. A short answer would be that New England didn't want a second war with Great Britain. There was a real gaffuffle about pressing American seaman into British Navy vessels that cause Jefferson to impose an embargo. All of this centered about the war of 1812.
The choice is between A and B. I would pick A, but I can't eliminate B.
C and D are not really amongst the reasons, particularly C.
The answer is C alliances when one country went to war they brought all their allies with them
This question is kind of hard to answer with out the subject