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.
Amendment XXVI right to vote at age 18 the right of citizens of the united states who are 18 years of age or older to vote shall not be denied or abridged
The main idea of Abraham Lincoln's Second Inaugural Address is that both the Union and the Confederacy were responsible for the Civil War. The second inaugural address was held at Washington D.C in 1865. From the excerpts, both the Union and Confederacy did not initially want to go to war but wanted to be victorious.