In a longitudinal wave, the motion of the medium is parallel to the direction of the wave. This means that the particles move left and right which in turn makes the other particles start to oscillate.
The UNIA founded by Marcus Garvey has a constitution which defines red, black, and green as the Pan-African colours: red representing the noble blood that unites all people of African ancestry, the colour black for the people, green for the rich land of Africa..
In Southern Africa, the term Coloureds (also known as Bruinmense or Kleurlinge) is an ethnic label for people of mixed ethnic origin who possess ancestry from Europe, Asia, and various Khoisan and Bantu ethnic groups of southern Africa.Not all Coloured people share the same ethnic background.oloured people constitute a plurality of the population in the Western Cape (48.8%) and a large minority in the Northern Cape (40.3%) and Eastern Cape (8.3%) provinces.