Answer:
If they lacked a written language they wouldn't have the ability to document the trade/deal etc.
Explanation: Incase the other person decides to do something deceitful like break one of the rules of the trade conducted,Ancient people would need evidence that they signed and agreed to the deals' rules. Since Most couldn't read or write in ancient times, They created the cylinder seal to give evidence of the deal taking place, either that or they would have scribes write out most of it for the peope conducting the trade etc.
Government corruption
Being the Roman emperor was a dangerous job. <span>Civil war thrust the empire into chaos, and more than 20 men took the throne in the span of only 75 years, usually after the murder of their predecessor. </span>
Large number of Vietnamese refugees fled to the united states
