Which power did the united states supreme court gain through the courts decision in marbury vs madison ?

They gained the power of judicial rule. Which basically means they can get rid of or block things. Such as laws if it goes against the constitution.

pan-africanism or pan-africanism is a political, philosophical, cultural and social movement that promotes african twinning, the defense of the rights of african people and the unity of africa under a single sovereign state, for all africans, both africa as of the african diasporas.