Science and Technology

In that time, railroads, were the main inventions that could be very useful, for marketing, etc.
The technology was the trains, that were like Robots, but in a transportation form.

Slavery and Abolition

The South was where all the slaves were located, and from there is that the slaves were transported to other parts of the countries, to their new owners. So the South, was the main place for trade of Slaves. The South opposed the abolition of slaves.