It is all of them. It does its best to stay out of armed conflicts. Once in however it is formidable foe. America did not formally enter WWII until Pearl Harbor.
One of the main thoughts America has is Human Rights but there are qualifications to that. Little was done about Rwanda, whereas the Middle East uses that argument all the time.
Ditto D.
Answer A
The answer to this question is C, I hope this helps you!
B. geographical boundaries created in earlier historical periods
I believe the answer is D. Hope this helped!
They were journalists who were very important during the progressive era. They often exposed big businesses for unsafe/unsanitary working conditions or problems facing america