The impact of African mathematics brought to the world the binary system which has brought about digital technology and circuitry. In this very Interesting talk Ron Eglash talks about how Africans made use of fractals mathematics in their village design and how this knowledge governs African Design and Architecture to date. Thankfully African Fractals are being used by schools in Africa and America to better teach mathematics and understanding of the binary system.

See more here http://www.ccd.rpi.edu/Eglash/csdt/african.html and watch the video below.