How is American Hip-Hop related to traditional African music?

Two cultures - Hip-hop and African - seemingly on the opposite sides of music surprisingly have many striking similarities. The musical links that both Hip-Hop (Rap) and African music are defining features in both musical genres. One of the most significant links between these two genres is the specific rhythms which provide the root of the music. The Burundi Warriors of African use a song composed of drum rhythms as a war song. Rhythm is also heavily used in Hip-Hop music and can be observed in the Wu-Tang Clan's song C.R.E.A.M. Rhythm is not the only defining feature in both of these genres, but music relating to special occasions or emotions is another trait which links these cultures together.