The Free Soil Party of 1848 Harbored Many Northerners Who

The Free Soil party of 1848 harbored many northerners who stood squarely against slavery in the territories primarily on the grounds that

A) further expansion of slavery might break up the Union.
B) it destroyed the chances of free white workers to rise up from wage-earning dependence.
C) slavery was a moral evil contrary to American principles.
D) slave labor would be unproductive in the West.
E) the southern fire-eaters were already planning further expansion into Central America.