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..
the colors red white blue and gold represent the national skillsusa organization red and white represent the individual states and chapters blue represents the common union of the states and of the chapters gold represents the individual the most important element of the organization