Racism In Nigeria Than Outside Nigeria

I really don't understand what you are trying to argue. Does it make a difference if something is Racism, Tribalism, or Nationalism? If one is using it as a means  of Supremacy over another, they are all wrong.

Now as far as RACE and the term that we know today is a European created way of classifying Humans. These classifications were broken down into colors (White, Yellow, Red, Brown, and Black). To be classified as as one of these groups was more than just the color of your skin.

1) Ancestry (Geography)
2) Facial Features
3) Skin Color
4) Hair Texture

etc,

Skin Color was not the only means of determining RACE when it was created during the Age of Exploration and out of the ideas of Darwinism.

I think you may have some definitions on RACE, Race my be used sometimes in place of Nation (Don't get Nation confused with Nation-State and present day countries as they exist), but your context is all wrong.