Where were the northernmost and southernmost extremes of the conflict fought?

Answer 1

The main reason for the Civil War was the right of secesion. The north began to put tighter and tighter restraints upon slavery in new territories and new states. The south feared this trend would lead to their votes being worthless, as new states would be anti-slavery. The right of the state to govern itself led the southern states to secede from the union. Slavery was the catalyst that lit the powder keg. There were many underlying causes that were building up as the 1850s came to a close the 1860s began. There are many who say that slavery was the main issue and that is not true. It was a very large contributing factor and arguably the main underlying cause of the southern states to evoke their ability to secede from the union. And remember, President Lincoln's main cause for going to war was to preserve the union. If he could have done so by leaving slavery intact, he would have done so.

The politically correct, and smart thing to say is that I am going to war to preserve the union because saving the union first, is of higher priority. You don't cut off your nose to spite you face. Lincoln did fight the Civil War too end the evil of slavery.