The answer is D, because after the relatively peaceful and philosophical Spring and Autumn period, various states were at war before the Qin state conquered them all, and China was reunited under the Qin Dynasty.
They were protesting Parliament
The united states dropped the worlds first attomic bomb over the city of Hiroshima in Japan and this explosian wiped 90% of the population a dlater killed many around 80,000+ were dead.