It was "B. General William T. Sherman" who famously said that freed slaves should be given “40 acres and mule” so they could become independent farmers, although this idea had been floated by others as well.
The term that is defined as “a legal doctrine that permitted racial segregation in public facilities" would be "Jim Crow", which was a series of such laws passed in the South after the Civil War.
The best and most correct answer among the choices provided by your question is the third choice or letter C which states that "Northern Whigs and Republicans supported the Compromise because it brought Kansas and Nebraska into the Union as "free" states, while Southern Democrats were appeased with the repeal of the Tariff of 1832." This is the <span>BEST description of why the Compromise of 1850 was successful in defusing the sectional conflict between both sides of the slavery issue.</span>
D. China should be the answer.