I think it might be D. Although I am not a genius there were a few Greek uprisings and the Persians had one simple rule that you had to follow, don't ever, EVER betray them.
Answer:
C. The middle kingdom. Everybody wants to be in the middle
Answer D is what better explains what happened to George Washington at Fort Necessity , Pennsylvania. After many hours under attack and with many of his men dead or wounded, George Wsahington signed its surrender. This happens to be the only battle in which George Washington surrendered.
Karal marx belived in communism
The answer would be B) wanted to keep trade in China open
