North vs South
In the south people and goods moved along rivers and bays. Some railroads in the south helped southern farmers ship there goods to the north. River boats travel hundreds of miles down stream to port cities such as savannah, Georgia and Mobile, Alabama. Also cotton was the South's most importiant product that was shipped by water.
In the south more then half the people were slaves. Their also were only a small portion of African Americans that were free, and if they were free they had to pay more on taxes and were not treated fairly. Most plantation owners got wealthy by using slaves to harvest their cash crops.