Nullification was the idea that states could nullify, or void, what? a. the citizenship of any american b. any federal law it felt was unconstitutional c. any treaty it felt was unconstitutional d. any other state's law it felt was unconstitutional

The answer is B. Any federal law it felt was unconstitutional. This is because the states have right to decide if a law is unconstitutional or not.  This is because the states intervene if these laws are unfair.  Still it is the Supreme Court that decides if it is unconstitutional or not.

The  pan-african movement  was an "emotional, cultural, psychological and ideological  movement  that began among the  african  dispora in the western hemisphere, for a closer  purpose, so that  african  people could feel secure, attain political, economic as well as psychological power visa vis other races or world regions" .