The railroad plays an important role in urbanizing southern area.
The easier access to southern area made the commercial goods and capital investment would flow to their area. There is no doubt that the railroad is a economic plus to the south.
However, the railroad brought more social changes to southern ideal. People began to seek more opportunities to make a fortune in the west when the railroad made it possible. And some African Americans moved to northern area to seek for freedom and equality.
After civil war the southern area is in a big chaos of race conflict, segregation. The civil war and economic growth had crushed the traditional southern family-oriented notion, as well as the bio-racial society.