12 gen 221 anni a. C. - Great wall of China
Descrizione:
Qin Shi Huang orders the strengthening of the northern frontier walls of what later would become the Great Wall of China.“Qin dynasty.” Wikipedia, Wikimedia Foundation, 6 Nov. 2017, en.wikipedia.org/wiki/Qin_dynasty.
Aggiunto al nastro di tempo:
Data:
12 gen 221 anni a. C.
Adesso
~ 2248 years ago