Sectionalism in the United States began after the Industrial Revolution. The economy of the country was different based on the geographical conditions. The North was the hub of trading centre and manufacturing goods during the colonial period. Later it rises with small scale industries where artisans showed different skills. The North welcomed the industrial revolution which helped the region to become urban with people moving to towns and cities in search of works. The South on the other hand was geographically good for agriculture. It had fertile soil and a hot climate which helped planters to grow cash crops which benefited them to earn wealth. The South in many ways rejected industries as their economy was based on plantations with the system of slavery.
There are a lot of reasons one could choose a president. You'll usually have to see which candidate seems more promising, honest, and be able to help your country.
