They used dry farming and flood irrigation.
It is very much hard to answer.
It was mainly because of how the North and the South of America had different lifestyles and economy's. You would be surprised to know that the Democratic party back then supported Slavery and the republicans dint support Slavery.
Plain Answer: Because of Slavery, Way of Life and Different Economy. The Democratic Party would do anything to keep themselves supported.
Answer:
The renaissance?
Explanation:
This is a guess.. I'm pretty sure it lead to the Enlightenment... so i think this was what was before...
