Manifest Destiny. It was the idea that America should span from the Atlantic to the Pacific. Therefore, it justified westward expansion.
D.love was seen as a problem because it diverted a couple from their duties to the larger family.
With the Emancipation Proclamation (1863), the President publicly endorsed the abolition of slavery in southern states. Lincoln's decision to support slavery's end in the south was mostly an economic decision, hoping to strike a serious blow to their ability to support agricultural endeavors. Lincoln did not ask the Border States to give up slavery.