what were the four long term causes of the civil war?
['Sectionalism. People felt greater loyalty to by their section-the north,south,or West than to the nation as a whole.', 'Slavery. ... ', 'Extension of slavery. ... ', 'States rights. ... ', 'Missouri compromise(1820) ... ', 'Compromise of 1850. ... ', 'Kansas -Nebraska act 1854) ... ', 'Birth of the Republican party (1854)']