The answer is a. necessary and proper. (i'm not positive that that's correct but that's what i would put.
There is the Executive, Legislative, and Judicial. Those are the three branches :)
It started with the Chinese Exclusion Act of 1882, but 10 years later it then came to the US opening Ellis Island in which immigrates had spent time before being able to actually enter the US.
By encouraging democratic revolutions, I believe.
Answer:
C) the impact increases as more people are involved
Explanation: