4. what issues caused sectionalism in
the early 1800s?

Explanation:

Sectionalism was the major cause of the United States Civil War because it was integral to creating the Southern social life as well as shaping its political tendencies, not the issue of slavery, which only affected a very small percent of southerners.

answer; (d) i believe that the correct answer is americans finally ran out of ammunition;

not sure might be he acquired the entire oregon territory from great britain