African philosophy
Other philosophical traditions, such as African philosophy, are rarely considered by foreign academia. Since emphasis is mainly placed on western philosophy as a reference point, the study, preservation and dissemination of valuable, but lesser known, non-Western philosophical works face many obstacles. Key African philosophers include the Fulani Uthman Dan Fodio, founder of the Sokoto Caliphate of Northern Nigeria and Umar Tall of Senegal; both were prolific Islamic scholars.