Answer:
Farm population increased.
More people were being taken from the slavery area
Lincoln had several good arguments against slavery
This was in a party that had a strong disdain for slavery and enjoying wide spread support in the North where the institution was frowned upon. Lincoln use of slavery to drive his political agenda was in full cognizant that it would tear the country into half.
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D and B I’m almost certain but if you’re still not sure I would look it up or ask ur teacher for help