The Ch'in Dynasty lasted from 221 to 207 B. C.
maybe 218 yrs. According to my social studies text book.
between 100 and 200 years
No. The Qing Dynasty was the most recent dynasty; the Qin was the oldest. During the Qin Dynasty, the Great Wall was built.
The 3rd to the 6th.
From 618 CE to 907 CE, the Tang Dynasty lasted for 290 years.