Persian Empire (15 set 550 ano antes da era comum – 21 out 330 ano antes da era comum)
Descrição:
 Cyrus the Great founded the Persian empire in 550 BC.   The empire was great because it was tolerant.  The empire did not care about what religion a person was, and it didn't care where you came from.  The Persian empire relates to the key concept of the Development of Sates and Empires. 
Adicionado na linha do tempo:
Data:
15 set 550 ano antes da era comum
21 out 330 ano antes da era comum
 ~ 220 years