500-599 (8 gen 400 anni – 19 dic 499 anni)
Descrizione:
 in the 5 century their was a man and he made math.he started to wonder to keep track of stuff so he made number to help tracking.also zezo can make stuff bigger or smaller. 
Aggiunto al nastro di tempo:
Data:
8 gen 400 anni
19 dic 499 anni
 ~ 100 years