I used the wording I used to make the title clear.
It was not intented to nationalize it.
A nigerian scam doesn't have to be written in Nigeria or be written by a Nigerian.
Take French fries for example, the word originates from "potatoes served in the French manner".
It's just a way to say it so everybody knows about what kind of scam email I'm talking about.
it's an email written in broken English with funny mistakes and stupid promises.

http://www.businessdictionary.com/definition/Nigerian-scam.html
https://www.investopedia.com/terms/n/nigerianscam.asp

But I'll add some stats to the thread so people are informed