What does President Abraham Lincoln believe is being tested during the Civil War?

Explanation:The Civil War, Lincoln said, is a test of “whether that nation, or any nation so conceived and so dedicated, can long endure.” So perhaps that translates as: A nation dedicated to liberty and equality cannot indefinitely remain the last bastion of legalized human slavery.

an era of negotiation.

is that an answer to your question?

answer: the time zones used to be whatever the local authority wanted them to be. one town might have 6am whenever the sun came up and another town had 6am 10 minutes later.  

the trains had a hard time when their orders said to be at a certain point at 6am.  

6am, but who's 6am.  

the railroads got together and set the time zones more or less along the longitude lines across the country.

explanation: