The Spring and Autumn Period was not the era immediately preceding the Qin dynasty, so that would not be the best answer. The Communist Revolution was a period of civil instability, however it was many centuries after the Qin dynasty, so that would not be a good answer. The War of the Roses was a civil war, but it was in 15th century England, so that would not be the best answer choice. The Ming dynasty was not a period of civil strife and it was many centuries after the Qin dynasty, so that would not be a good choice. Lastly, the Warring States Period was a time of civil strife and directly preceded the Qin dynasty, so that would be the best choice.

Mao Zedong was the leader of the Communist Revolution in the 20th century, so he would not be a good answer to this question. Genghis Khan was a Mongol and the creator of the Mongol Empire, so he too is not a good choice. Kublai Khan was the grandson of Genghis and lived in the 13th century, so he would not be a good answer to this question. Ivan the Great was the Prince of Moscow and founder of Rus - the predecessor state of Russia - so he would not be the best choice. Lastly Yu the Great was allegedly able to devise a series of dams and flood control measures that mitigated serious agricultural problems in central China.

Laozi was the founder of Taoism and did not focus on social order, so he would not be the best choice. Yu the Engineer was an arguably fictional sage-emperor and was not a philosopher, so he would not be the best choice. Mao Zedong was the leader of the Communist Revolution and lived in the 20th century, so he too would not be the best answer. Finally, Confucius was a Chinese historian and philosopher concerned with both of the aspects in question, so he would be the best choice.

Han Dynasty 206 B.C.E. to 220 C.E.

Tang Dynasty 618 C.E. to 907 C.E.

Ming Dynasty 1368 C.E to 1644 C.E.

Qing Dynasty 1644 C.E. to 1911 C.E.