Answer:
The North was increasingly a manufacturing economy and tied with the West, while the South remained agrarian.
Explanation:
The economies of the North and the South were very different, the North was more industrialized and focused on commerce than the south. In the South, the economy was focused on plantation farming.
The railroads made the transportation of crops even easier, because of that the economy of the Southern states did not change and remained agrarian. Different than the Northern states that became increasingly a manufacturing economy, with bigger cities.