han dynasty (1 gen 206 anni a. C. – 1 gen 220 anni)
Descrizione:
the Han dynasty was another amazing period for the people of ancient China. during the dynasty they invented the first seismograph Aswell as paper and sundials.Aggiunto al nastro di tempo:
Data:
1 gen 206 anni a. C.
1 gen 220 anni
~ 426 years