Which best defines sectionalism?

a. a way to divide countries, states, and cities
b. a theory explaining the cause of the civil war
c. political, social, and economic disputes between regions
d. political differences as defined by political parties
e. a simple definition of the mason-dixon line

in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

i think it is the byzantine empire