The issues that caused sectionalism to develop were:

Sectionalism was caused by multiple issues at that time. It occurred because of slavery, slave power conspiracy, economic differences and cultural differences. The main cause of sectionalism was slavery because how Northerners don’t like how Southerners don’t see the immorality of it. 

where is the passage?

can't without the passage.

post the full question.

the nationalists wanted a strong central government so the new country wouldn't fall apart.

- r3ktforgood ☕