Answer:
Customs and culture
Explanation:
I've done some research and found many articles about the other options given to you but didn't see anything about Customs and Culture
Industrial Revolution
- The Industrial Revolution era had a major impact on why sectionalism was spreading through the air. Everything in the north was industrialized or being manufactured which totally made them look different from the south
Slavery
- everyone knows slavery was a big cause of sectionalism
Tariffs
- tariff of 1828 resulted in increased sectionalism in the United States
Therefore option C is correct
