Yeah I think you're correct there
The Nullification Crisis was a conflict between South Carolina and the federal government. South Carolina felt states had the right to nullify federal laws.
The answer is the last one.
<span>As for many Americans, the Second World War boosted the economic prospects of many African Americans. In particular, war industries created a demand for labor, which many black workers, including black women, were able to fill. Thousands of African Americans moved north to industrial centers, but also to places like California, which saw tremendous population growth during the war due to the war industries that developed there.</span>
The answer is B. It was based off the moral principles.