Sectionalism means
a. one section is better than the others
b. one section desires things at the expense of others
c. each section is equal to the others in every respect

b. one section desires things at the expense of others

Explanation:

Sectionalism defines a narrow focus on local or distinctive features of a particular group as oppose to others. it is usually not concern with the general welfare as  It segregates by comparing one to the other and sometimes underline by competition aimed at bettering the other groups with the general r secttions.  

answer; adjusting and adapting to a culture other than one's own;