How did the constitutional convention lead to the civil war?

The Compromise of 1850 and the Kansas-Nebraska Act also worked to obtain similar results. When the newly founded Republican Party (the first real anti-slavery party) won its first election in 1860 with Abraham Lincoln, the South feared that the government would infringe on its rights and interests, which led to secession, and then the Civil War.

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:

b. florence

d. milan