The original two-party system in the U. S.was made up of the and the . a.
Know-Nothings, Whigs
b.
Republican, Democrats
c.
Whigs, Democrats
d.
Whigs, Republicans

B - republicans and democrats

South carolina was so angry about the election of lincoln that they seceded from the union on december 20, 1860. they attacked fort sumter later, on april 12, 1861.