One reason that sectionalism developed in the United States was because... A. northern legislators favored stronger states' rights.
B. the U. S. Constitution did not grant any rights to the states.
C. the economies of the North and South were very different. o
D. the federal government'gave more support to Northern states than to Southern states.​

An excessive concern with local interests rather than concentrating on what the nation wants. The differences between the North (Northerners) and South (Southerners), contributed to the growth of sectionalism in America. The expansion of slavery was a sectional issue that divided the U.S. into North and South.

hope it helps.

anti-semitism hope this !

the two things that develop a strong social foundation are: a. separation of church and states e. education received attention separation of church and states separate the illogical  argument that came from religious beliefs to a fact based belief. while education will make us remember the past to avoid the repeat of our mistakes.