Which philosopher is credited with introducing the concepts of reason and logic?

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.

"a government in which power is divided between state and national levels". federalism is a system of government in which entities such and state and province, share power with the national government.