Well we know that it is not A or C, Reason: Some states have up to 5m people in it. (For example about 8 live in just new York alone.)
And we also know its not 10 billion. Reason for this: Scientist have proven that there is no more then 8 billion people today.
And so now we got 6.5 billion is the closest, the real number is about 7.5 billion.
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Answer: Kissinger served as National Security Advisor and Secretary of State under President Richard Nixon!!
Explanation:
One factor is the views that you have. If you share the same views for the future with the PAC group then there's higher likeness that you will get their donations. One factor also is belonging in a committee that decides on legislature or something similar. If the PAC group wants some law to be passed, they'll support that committee that's in charge of it.
The fact that the America was largely increased by farming in the 19th century