Answer:
b. a prince of one Chinese state.
c. 220 B.C.E.
Explanation:
Qin Shi Huang was the founder of the Qin dynasty and the first emperor of unified China. A visitor to China in 220 BCE would have seen a unified country under this emperor, as Qin Shi Huang ruled as emperor from 221 BCE to 210 BCE. Qi Shi Huang is also remembered for expanding the Chinese territory and for his economic and political reforms. The emperor was also responsible for unifying walls into the Great Wall of China and creating an enormous mausoleum guarded by the Terracota Army.