I believe B. Let me know if i was wrong..
They feared them because they were fearless and were very mischievous and didn’t care what anyone else thought of them.
The main way in which Chinese culture changed during the Warring States period was that it became far more unified as a result of these conflicts, since they led to the first real Chinese Empire.
The 5th prez was james monroe
The answer is people were encouraged to grow food for them during WW1.