Answer:
The balance of power theory in international relations suggests that states may secure their survival by preventing any one state from gaining enough military power to dominate all others.
In this case, I could only research this part of your question. Try reading an article about the Concert of Europe.
Hopefully, someone else is capable of fully answering your question.
I apologize for my inconvenience.
(this isnt an answer) Obviously you came from k12 so we are in the same boat, did you ever find the answer?
Answer:
World War II was the first war that claimed the lives of more civilians than soldiers and witnessed the horror of the first systematic genocide in modern history with the Holocaust. In addition, many cities, towns and villages across Europe were completely destroyed by aerial bombing and heavy artillery. The American troops provided moral support. The presence of many soldiers encouraged them to fight though the troops had no experience and were also unprepared but they had an impact to the victory.
The correct answer is: [A]: "Andrew Carnegie" .
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