Who, When and Why Built the Great Wall

Who: the ancient Chinese laboring people (common people, farmers, soldiers and slaves) in the Warring States Period, Qin, Ming and other dynasties constructed that.

When: Its construction started from the Warring States Period and ended at the Ming Dynasty, lasting more than 2,000 years.

Why: It was built to protect the people and territories south of the wall from a continued threat of invasion by the northern nomadic tribes.

To be more clear the western and eastern Zhou, Qin, Han, western and eastern Jin, Sui, Tang, Liao, song, Ming and northern and southern dynasties. wanted and comaned there people to work on he wall.